Display device

ABSTRACT

A display device includes a first display area and a second display area located on opposite sides of a display area. The display device includes first through third sub-pixels. The first through third sub-pixels are disposed in the first and second display areas. The first and second sub-pixels are arranged in a first column adjacent to a first boundary, and the third sub-pixels are arranged in a second column. The second and first sub-pixels are arranged in a third column adjacent to a second boundary, and the third sub-pixels are arranged in a fourth column. The third sub-pixels are arranged in a first column and a second column of the first sub-area. The first and second sub-pixels are arranged in a first column and a second column of the third sub-area. The first to third sub-pixels are not disposed in the second column of the first and third sub-areas.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a Continuation of U.S. patent application Ser. No.17/693,453, filed Mar. 14, 2022, which claims priority from and thebenefit of Korean Patent Application No. 10-2021-0037524, filed on Mar.23, 2021, each of which is hereby incorporated by reference for allpurposes as if fully set forth herein.

BACKGROUND Field

Embodiments of the invention relate generally to a display device. Moreparticularly, embodiments of the invention relate to a display deviceincluding sub-pixels of different sizes.

Discussion of the Background

Flat panel display devices are used as display devices for replacing acathode ray tube display device due to lightweight and thincharacteristics thereof. As representative examples of such flat paneldisplay devices, there are a liquid crystal display device and anorganic light emitting diode display device.

Such a display device may include a display area in which an image isdisplayed and a peripheral area in which the image is not displayed. Forexample, sub-pixels may be disposed in the display area. In this case,the sub-pixels may be arranged in the display area in a PenTile™ schemein which red/green-blue/green (RG-BG) sub-pixels are repeatedly arrangedin a row direction. Furthermore, the peripheral area may be located onboth sides of the display area. For example, a gate driver, an emissionsignal driver, and the like may be disposed in the peripheral area.

Recently, a display device in which sub-pixels are formed in aperipheral area to display an image even in the peripheral area has beendeveloped. In this case, the display device may be configured such thatsizes of the sub-pixels disposed in the display area are different fromsizes of the sub-pixels disposed in the peripheral area, respectively.

The above information disclosed in this Background section is only forunderstanding of the background of the inventive concepts, and,therefore, it may contain information that does not constitute priorart.

SUMMARY

Devices constructed according to embodiments of the invention arecapable of improving image quality of a device by having sub-pixelsoverlap pixel circuits.

Additional features of the inventive concepts will be set forth in thedescription which follows, and in part will be apparent from thedescription, or may be learned by practice of the inventive concepts.

Embodiments provide a display device including sub-pixels.

According to embodiments of the inventive concepts, a display deviceincludes a display area, a first display area located in one side of thedisplay area and including a first sub-area and a second sub-area, and asecond display area located in an opposite side of the display area andincluding a third sub-area and a fourth sub-area. The display deviceincludes a substrate and a plurality of first, second, and thirdsub-pixels. The first, second, and third sub-pixels are disposed in thedisplay area, the first display area, and the second display area on thesubstrate. The first and second sub-pixels are repeatedly arranged in afirst column of the display area that is adjacent to a first boundarybetween the display area and the first sub-area, and the thirdsub-pixels are arranged in a second column of the display area. Thesecond and first sub-pixels are repeatedly arranged in a third column ofthe display area that is adjacent to a second boundary between thedisplay area and the third sub-area, and the third sub-pixels arearranged in a fourth column of the display area. The third sub-pixelsare arranged in a first column of the first sub-area that is adjacent tothe first boundary, and a second column of the first sub-area is locatedbetween the first boundary and the first column of the first sub-area.The first and second sub-pixels are arranged in a first column of thethird sub-area that is adjacent to the second boundary, and a secondcolumn of the third sub-area is located between the second boundary andthe first column of the third sub-area. The first to third sub-pixelsare not disposed in the second column of the first sub-area and thesecond column of the third sub-area.

In embodiments, a third column of the first sub-area may be adjacent tothe first column of the first sub-area, and a fourth column of the firstsub-area may be located between the first and third columns of the firstsub-area. The second and first sub-pixels may be arranged in the thirdcolumn of the first sub-area.

In embodiments, the first to third sub-pixels may not be disposed in thefourth column of the first sub-area.

In embodiments, the first to third sub-pixels may be arranged in azigzag shape in an order of the first sub-pixel, the third sub-pixel,the second sub-pixel, and the third sub-pixel in the first and secondcolumns of the display area.

In embodiments, a third column of the third sub-area may be adjacent tothe first column of the third sub-area, and a fourth column of the thirdsub-area may be located between the first and third columns of the thirdsub-area. The third sub-pixels may be arranged in the third column ofthe third sub-area.

In embodiments, the first to third sub-pixels may not be disposed in thefourth column of the third sub-area.

In embodiments, the first to third sub-pixels may be arranged in azigzag shape in an order of the second sub-pixel, the third sub-pixel,the first sub-pixel, and the third sub-pixel in the third and fourthcolumns of the display area.

In embodiments, the display device may further include a first circuitstructure disposed in the second sub-area on the substrate.

In embodiments, the display device may further include a plurality offirst, second, and third pixel circuits connected to the first to thirdsub-pixels disposed in the display area, the first display area, and thesecond display area, in which the first, second, and third pixelcircuits are connected to the first to third sub-pixels, respectively.The first to third pixel circuits connected to the first to thirdsub-pixels disposed in the second sub-area, respectively, may bedisposed in the first sub-area.

In embodiments, the display device may further include a second circuitstructure disposed in the fourth sub-area on the substrate.

In embodiments, the display device may further include a plurality offirst, second, and third pixel circuits connected to the first to thirdsub-pixels disposed in the display area, the first display area, and thesecond display area, in which the first, second, and third pixelcircuits are connected to the first to third sub-pixels, respectively.The first to third pixel circuits connected to the first to thirdsub-pixels disposed in the fourth sub-area, respectively, may bedisposed in the third sub-area.

In embodiments, a number of the first and second sub-pixels arranged inthe first column of the display area may be equal to a number of thethird sub-pixels arranged in the second column of the display area, anda number of the third sub-pixels arranged in the first column of thefirst sub-area may be smaller than the number of the first and secondsub-pixels arranged in the first column of the display area.

In embodiments, the number of the third sub-pixels arranged in the firstcolumn of the first sub-area may be half the number of the first andsecond sub-pixels arranged in the first column of the display area.

In embodiments, the first display area and the second display area maybe parallel to each other to face each other. The second and thirdcolumns of the display area may be located between the first and fourthcolumns of the display area, and the second column of the first sub-areamay be located between the first column of the display area and thefirst column of the first sub-area. The second column of the thirdsub-area may be located between the fourth column of the display areaand the first column of the third sub-area. Sizes of the first to thirdsub-pixels disposed in the first and second display areas may be greaterthan sizes of the first to third sub-pixels disposed in the displayarea, respectively.

According to embodiments of the inventive concepts, a display deviceincludes a display area, a first display area located in one side of thedisplay area and including a first sub-area and a second sub-area, and asecond display area located in an opposite side of the display area andincluding a third sub-area and a fourth sub-area. The display deviceincludes a substrate and a plurality of first, second, and thirdsub-pixels. The first, second, and third sub-pixels are disposed in thedisplay area, the first display area, and the second display area on thesubstrate. The first and second sub-pixels may be repeatedly arranged ina first column of the display area that is adjacent to a first boundarybetween the display area and the first sub-area, and the thirdsub-pixels are arranged in a second column of the display area. Thesecond and first sub-pixels may be repeatedly arranged in a third columnof the display area that is adjacent to a second boundary between thedisplay area and the third sub-area, and the third sub-pixels may bearranged in a fourth column of the display area. A first sub-pixelcolumn including the third sub-pixels may be disposed in the firstsub-area that is adjacent to the first boundary. A second sub-pixelcolumn including the third sub-pixels may be disposed in the thirdsub-area that is adjacent to the second boundary. A distance where thefirst sub-pixel column is spaced apart from the second column of thedisplay area may be equal to a distance where the second sub-pixelcolumn is spaced apart from the fourth column of the display area.

In embodiments, the display device may further include a third sub-pixelcolumn, a fourth sub-pixel column, and a fifth sub-pixel column. Thethird sub-pixel column may be spaced apart from the first sub-pixelcolumn in a direction from the display area to the first display area inthe first sub-area, and may include the second and first sub-pixels. Thefourth sub-pixel column may be spaced apart from the third sub-pixelcolumn in the direction in the first sub-area, and may include the thirdsub-pixels. The fifth sub-pixel column may be spaced apart from thefourth sub-pixel column in the direction in the first sub-area, and mayinclude the first and second sub-pixels.

In embodiments, a separation distance between the first sub-pixel columnand the third sub-pixel column in the direction may be smaller than aseparation distance between the third sub-pixel column and the fourthsub-pixel column in the direction.

In embodiments, the display device may further include a sixth sub-pixelcolumn, a seventh sub-pixel column, and an eighth sub-pixel column. Thesixth sub-pixel column may be disposed between the fourth column of thedisplay area and the second sub-pixel column in the third sub-area, andmay include the first and second sub-pixels. The seventh sub-pixelcolumn may be spaced apart from the second sub-pixel column in adirection from the display area to the third sub-area in the thirdsub-area, and may include the second and first sub-pixels. The eighthsub-pixel column may be spaced apart from the seventh sub-pixel columnin the direction in the third sub-area, and may include the thirdsub-pixels.

In embodiments, a separation distance between the second sub-pixelcolumn and the sixth sub-pixel column in the direction may be smallerthan a separation distance between the second sub-pixel column and theseventh sub-pixel column in the direction.

According to embodiments of the inventive concepts, a display deviceincludes a display area, a first display area located in one side of thedisplay area and including a first sub-area and a second sub-area, and asecond display area located in an opposite side of the display area andincluding a third sub-area and a fourth sub-area. The display deviceincludes a substrate and a plurality of first, second, and thirdsub-pixels. The first, second, and third sub-pixels are disposed in thedisplay area, the first display area, and the second display area on thesubstrate. The first and second sub-pixels may be repeatedly arranged ina first column of the display area that is adjacent to a first boundarybetween the display area and the first sub-area, and the thirdsub-pixels may be arranged in a second column of the display area. Thethird sub-pixels may be repeatedly arranged in a third column of thedisplay area that is adjacent to a second boundary between the displayarea and the third sub-area, and the first and second sub-pixels may berepeatedly arranged in a fourth column of the display area. The thirdsub-pixels may be arranged in a first column of the first sub-area thatis adjacent to the first boundary, and a second column of the firstsub-area may be located between the first boundary and the first columnof the first sub-area. The third sub-pixels may be arranged in a firstcolumn of the third sub-area that is adjacent to the second boundary,and a second column of the third sub-area may be located between thesecond boundary and the first column of the third sub-area. The first tothird sub-pixels may not be disposed in the second column of the firstsub-area and the second column of the third sub-area.

According to the display device of the embodiments of the inventiveconcepts, the first to third sub-pixels are not disposed in the secondcolumn of the first sub-area and the second column of the thirdsub-area, so that a defect may not occur in the process of forming thelight emitting layer of each of the first to third sub-pixels that areadjacent to the first and second boundaries.

According the display device of the embodiments of the inventiveconcepts, the distance g1 of the first sub-pixel column from the secondcolumn of the display area is substantially equal to the distance of thesecond sub-pixel column from the fourth column of the display area, sothat a value of the roughness index (R-index) may be relatively reduced,and image quality of the display device may be relatively improved.

According to the display device of the embodiments of the inventiveconcepts, when the arrangements of the sub-pixels in the first columnand the last column in the display area are the same, and thearrangement of the sub-pixels disposed in the first display area and thearrangement of the sub-pixels disposed in the second display area aresymmetrical with each other, the value of the R-index may be relativelyreduced, and image quality of the display device may be relativelyimproved. In addition, a defect may not occur in the process of formingthe light emitting layer of each of the first to third sub-pixels thatare adjacent to the first and second boundaries.

It is to be understood that both the foregoing general description andthe following detailed description are illustrative and explanatory andare intended to provide further explanation of the invention as claimed.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a furtherunderstanding of the invention and are incorporated in and constitute apart of this specification, illustrate embodiments of the invention, andtogether with the description serve to explain the inventive concepts.

Embodiments can be understood in more detail from the followingdescription taken in conjunction with the accompanying drawings.

FIG. 1 is a plan view showing a display device according to embodimentsthat is constructed according to principles of the invention.

FIG. 2 is a circuit diagram showing one example of a circuit structureincluded in the display device of FIG. 1 .

FIG. 3 is a circuit diagram showing another example of the circuitstructure included in the display device of FIG. 1 .

FIG. 4 is a circuit diagram showing a sub-pixel and a pixel circuitincluded in the display device of FIG. 1 .

FIG. 5 is a partially enlarged plan view showing a region A of FIG. 1 .

FIG. 6 is a partially enlarged plan view showing a region B of FIG. 1 .

FIG. 7 is a cross-sectional view taken along line I-I′ of FIG. 5 .

FIG. 8 is a cross-sectional view taken along line II-II′ of FIG. 5 .

FIG. 9 is a cross-sectional view taken along line III-III′ of FIG. 5 .

FIG. 10 is a cross-sectional view taken along line IV-IV′ of FIG. 5 .

FIGS. 11 and 12 are plan views showing one example of a connectionelectrode shown in FIGS. 5 and 6 .

FIGS. 13 and 14 are plan views showing another example of the connectionelectrode shown in FIGS. 5 and 6 .

FIGS. 15 and 16 are plan views showing one example of an arrangement ofsub-pixels included in the display device of FIG. 1 .

FIGS. 17 and 18 are plan views showing a display device according toembodiments of the inventive concepts.

FIGS. 19 and 20 are plan views showing a display device according toembodiments of the inventive concepts.

FIG. 21 is a plan view showing one example of an arrangement ofsub-pixels included in the display device of FIGS. 19 and 20 .

DETAILED DESCRIPTION

In the following description, for the purposes of explanation, numerousspecific details are set forth in order to provide a thoroughunderstanding of various embodiments or implementations of theinvention. As used herein “embodiments” and “implementations” areinterchangeable words that are non-limiting examples of devices ormethods employing one or more of the inventive concepts disclosedherein. It is apparent, however, that various embodiments may bepracticed without these specific details or with one or more equivalentarrangements. In other instances, well-known structures and devices areshown in block diagram form in order to avoid unnecessarily obscuringvarious embodiments. Further, various embodiments may be different, butdo not have to be exclusive. For example, specific shapes,configurations, and characteristics of an embodiment may be used orimplemented in another embodiment without departing from the inventiveconcepts.

Unless otherwise specified, the illustrated embodiments are to beunderstood as providing features of varying detail of some ways in whichthe inventive concepts may be implemented in practice. Therefore, unlessotherwise specified, the features, components, modules, layers, films,panels, regions, and/or aspects, etc. (hereinafter individually orcollectively referred to as “elements”), of the various embodiments maybe otherwise combined, separated, interchanged, and/or rearrangedwithout departing from the inventive concepts.

The use of cross-hatching and/or shading in the accompanying drawings isgenerally provided to clarify boundaries between adjacent elements. Assuch, neither the presence nor the absence of cross-hatching or shadingconveys or indicates any preference or requirement for particularmaterials, material properties, dimensions, proportions, commonalitiesbetween illustrated elements, and/or any other characteristic,attribute, property, etc., of the elements, unless specified. Further,in the accompanying drawings, the size and relative sizes of elementsmay be exaggerated for clarity and/or descriptive purposes. When anembodiment may be implemented differently, a specific process order maybe performed differently from the described order. For example, twoconsecutively described processes may be performed substantially at thesame time or performed in an order opposite to the described order.Also, like reference numerals denote like elements.

When an element, such as a layer, is referred to as being “on,”“connected to,” or “coupled to” another element or layer, it may bedirectly on, connected to, or coupled to the other element or layer orintervening elements or layers may be present. When, however, an elementor layer is referred to as being “directly on,” “directly connected to,”or “directly coupled to” another element or layer, there are nointervening elements or layers present. To this end, the term“connected” may refer to physical, electrical, and/or fluid connection,with or without intervening elements. Further, the D1-axis, the D2-axis,and the D3-axis are not limited to three axes of a rectangularcoordinate system, such as the x, y, and z-axes, and may be interpretedin a broader sense. For example, the D1-axis, the D2-axis, and theD3-axis may be perpendicular to one another, or may represent differentdirections that are not perpendicular to one another. For the purposesof this disclosure, “at least one of X, Y, and Z” and “at least oneselected from the group consisting of X, Y, and Z” may be construed as Xonly, Y only, Z only, or any combination of two or more of X, Y, and Z,such as, for instance, XYZ, XYY, YZ, and ZZ. As used herein, the term“and/or” includes any and all combinations of one or more of theassociated listed items.

Although the terms “first,” “second,” etc. may be used herein todescribe various types of elements, these elements should not be limitedby these terms. These terms are used to distinguish one element fromanother element. Thus, a first element discussed below could be termed asecond element without departing from the teachings of the disclosure.

Spatially relative terms, such as “beneath,” “below,” “under,” “lower,”“above,” “upper,” “over,” “higher,” “side” (e.g., as in “sidewall”), andthe like, may be used herein for descriptive purposes, and, thereby, todescribe one elements relationship to another element(s) as illustratedin the drawings. Spatially relative terms are intended to encompassdifferent orientations of an apparatus in use, operation, and/ormanufacture in addition to the orientation depicted in the drawings. Forexample, if the apparatus in the drawings is turned over, elementsdescribed as “below” or “beneath” other elements or features would thenbe oriented “above” the other elements or features. Thus, theillustrative term “below” can encompass both an orientation of above andbelow. Furthermore, the apparatus may be otherwise oriented (e.g.,rotated 90 degrees or at other orientations), and, as such, thespatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particularembodiments and is not intended to be limiting. As used herein, thesingular forms, “a,” “an,” and “the” are intended to include the pluralforms as well, unless the context clearly indicates otherwise. Moreover,the terms “comprises,” “comprising,” “includes,” and/or “including,”when used in this specification, specify the presence of statedfeatures, integers, steps, operations, elements, components, and/orgroups thereof, but do not preclude the presence or addition of one ormore other features, integers, steps, operations, elements, components,and/or groups thereof. It is also noted that, as used herein, the terms“substantially,” “about,” and other similar terms, are used as terms ofapproximation and not as terms of degree, and, as such, are utilized toaccount for inherent deviations in measured, calculated, and/or providedvalues that would be recognized by one of ordinary skill in the art.

Various embodiments are described herein with reference to sectionaland/or exploded illustrations that are schematic illustrations ofidealized embodiments and/or intermediate structures. As such,variations from the shapes of the illustrations as a result, forexample, of manufacturing techniques and/or tolerances, are to beexpected. Thus, embodiments disclosed herein should not necessarily beconstrued as limited to the particular illustrated shapes of regions,but are to include deviations in shapes that result from, for instance,manufacturing. In this manner, regions illustrated in the drawings maybe schematic in nature and the shapes of these regions may not reflectactual shapes of regions of a device and, as such, are not necessarilyintended to be limiting.

Unless otherwise defined, all terms (including technical and scientificterms) used herein have the same meaning as commonly understood by oneof ordinary skill in the art to which this disclosure is a part. Terms,such as those defined in commonly used dictionaries, should beinterpreted as having a meaning that is consistent with their meaning inthe context of the relevant art and should not be interpreted in anidealized or overly formal sense, unless expressly so defined herein.

Hereinafter, display devices according to one or more embodiments willbe described in detail with reference to the accompanying drawings. Inthe accompanying drawings, same or similar reference numerals refer tothe same or similar elements.

FIG. 1 is a plan view showing a display device according to embodimentsthat is constructed according to principles of the invention.

Referring to FIG. 1 , a display device 100 may include a substrate 110,first to third sub-pixels R, B, and G (e.g., a red sub-pixel R, a bluesub-pixel B, and a green sub-pixel G), a first circuit structure 800, asecond circuit structure 900, and the like. In addition, the displaydevice 100 may include a display area 10, a first display area 20, and asecond display area 30. In this case, the first display area 20 mayinclude a first sub-area 21 and a second sub-area 22, and the seconddisplay area 30 may include a third sub-area 31 and a fourth sub-area32. In alternative implementations from what is shown in FIG. 1 , thedisplay device 100 may further include first to third pixel circuitsconnected to the first to third sub-pixels R, B, and G, respectively.

The first display area 20 may be located in one side of the display area10, and the second display area 30 may be located in an opposite side ofthe display area 10. In other words, the display area 10 may be locatedbetween the first display area 20 and the second display area 30. Thefirst display area 20 and the second display area 30 may face eachother, and may be substantially parallel to each other. In addition, thefirst sub-area 21 may be located closer to the display area 10 than thesecond sub-area 22, and the third sub-area 31 may be located closer tothe display area 10 than the fourth sub-area 32.

The first to third sub-pixels R, B, and G may be disposed in the displayarea 10, the first display area 20, and the second display area 30 onthe substrate 110. The first to third sub-pixels R, B, and G may bearranged such that red/green-blue/green (RG-BG) sub-pixels arerepeatedly arranged in a first direction D1 (e.g., a row direction) thatis parallel to a top surface of the display device 100 (e.g., in aPenTile™ scheme).

For example, each of the first to third sub-pixels R, B, and G maycorrespond to an organic light emitting diode OLED shown in FIG. 4 , andthe first to third pixel circuits may correspond to a pixel circuit PCshown in FIG. 4 . An image may be displayed in the display area 10, thefirst display area 20, and the second display area 30 through the firstto third sub-pixels R, B, and G and the first to third pixel circuits.

In the display area 10, the first sub-pixel R may overlap the firstpixel circuit connected to the first sub-pixel R, the second sub-pixel Bmay overlap the second pixel circuit connected to the second sub-pixelB, and the third sub-pixel G may overlap the third pixel circuitconnected to the third sub-pixel G.

In the first sub-area 21 and the third sub-area 31, the first sub-pixelR may overlap the first pixel circuit connected to the first sub-pixelR, the second sub-pixel B may overlap the second pixel circuit connectedto the second sub-pixel B, and the third sub-pixel G may overlap thethird pixel circuit connected to the third sub-pixel G.

In the second sub-area 22 and the fourth sub-area 32, the firstsub-pixel R may not overlap the first pixel circuit connected to thefirst sub-pixel R, the second sub-pixel B may not overlap the secondpixel circuit connected to the second sub-pixel B, and the thirdsub-pixel G may not overlap the third pixel circuit connected to thethird sub-pixel G. For example, since the first and second circuitstructures 800 and 900 are disposed in the second sub-area 22 and thefourth sub-area 32, respectively, a space for arranging the first tothird pixel circuits connected to the first to third sub-pixels R, B,and G may be insufficient. Therefore, the first to third pixel circuitsconnected to the first to third sub-pixels R, B, and G disposed in thesecond sub-area 22 may be disposed in the first sub-area 21, and thefirst to third pixel circuits connected to the first to third sub-pixelsR, B, and G disposed in the fourth sub-area 32 may be disposed in thethird sub-area 31 (see FIG. 5 ).

Each of the first to third pixel circuits may be provided with at leastone driving transistor, at least one switching transistor, at least onecapacitor, and the like. In embodiments, each of the first to thirdpixel circuits may be provided with one driving transistor (e.g., afirst transistor TR1 of FIG. 4 ), six switching transistors (e.g.,second to seventh transistors TR2, TR3, TR4, TR5, TR6, and TR7 of FIG. 4), one storage capacitor (e.g., a storage capacitor CST of FIG. 4 ), andthe like.

In the embodiments, sizes of the first to third sub-pixels R, B, and Gdisposed in the display area 10 may be different from sizes of the firstto third sub-pixels R, B, and G disposed in the first and second displayareas 20 and 30, respectively. For example, the sizes of the first tothird sub-pixels R, B, and G disposed in the first and second displayareas 20 and 30 may be greater than the sizes of the first to thirdsub-pixels R, B, and G disposed in the display area 10, respectively. Inthis case, configurations (e.g., a number of transistors and a number ofcapacitors) of the first to third pixel circuits disposed in the displayarea 10 may be different from configurations of the first to third pixelcircuits disposed in the first and second display areas 20 and 30,respectively.

In addition, the display device 100 may further include a pad arealocated on a lower side of the display area 10. Pad electrodes may bedisposed in the pad area. An external device configured to provide asignal and a power to the display device 100 may be electricallyconnected to the pad electrode through a flexible printed circuit boardor a printed circuit board. The external device may generate a datasignal, a gate signal, an emission control signal, a gate initializationsignal, an initialization voltage, a power supply voltage, and the like,and the data signal, the gate signal, the emission control signal, thegate initialization signal, the initialization voltage, the power supplyvoltage, and the like may be provided to the first circuit structure800, the second circuit structure 900, the first to third pixelcircuits, and the first to third sub-pixels R, B, and G through the padelectrodes and the flexible printed circuit board. In addition, a driverintegrated circuit may be mounted on the flexible printed circuit board.In other embodiments, the driver integrated circuit may be mounted onthe display device 100 adjacent to the pad electrodes.

The first circuit structure 800 may be disposed in the second sub-area22 on the substrate 110, and the second circuit structure 900 may bedisposed in the fourth sub-area 32 on the substrate 110. The firstcircuit structure 800 and the second circuit structure 900 may include agate driver, an emission signal driver, and the like.

The gate driver may receive the gate signal from the external device,and the gate signal may be provided to the first to third pixel circuitsthrough the gate driver. The emission signal driver may receive theemission control signal from the external device, and the emissioncontrol signal may be provided to the first to third pixel circuitsthrough the emission signal driver.

In the embodiments, although the first circuit structure 800 and thesecond circuit structure 900 are disposed in the second sub-area 22 andthe fourth sub-area 32, respectively, the display device 100 includesthe first to third sub-pixels R, B, and G disposed in all of the displayarea 10, the first display area 20, and the second display area 30, sothat an image may be displayed over the whole top surface of the displaydevice 100. In other embodiments, the first display area 20 may notexist, and the first circuit structure 800 disposed in the secondsub-area 22 may be disposed in the fourth sub-area 32 together with thesecond circuit structure 900.

However, although each of the display area 10, the first display area20, and the second display area 30 according to one or more embodimentshas been described as having a rectangular shape when viewed in a planview, the shape is not limited thereto. For example, each of the displayarea 10, the first display area 20, and the second display area 30 mayhave a triangular shape, a rhombic shape, a polygonal shape, a circularshape, a track shape, or an elliptical shape when viewed in a plan view.

FIG. 2 is a circuit diagram showing one example of a circuit structureincluded in the display device of FIG. 1 . The circuit structure shownin FIG. 2 may correspond to one gate stage included in the gate driver.

Referring to FIG. 2 , the first circuit structure 800 (or the secondcircuit structure 900) may include a first driving unit 1210, a seconddriving unit 1220, an output unit 1230, and a first transistor M1.

The output unit 1230 may include a fifth transistor M5 and a sixthtransistor M6. The output unit 1230 may control a voltage supplied to anoutput terminal 1004 based on voltages of a first node N1 and a secondnode N2. The fifth transistor M5 may be connected between a firstdriving power (VGH) wire (e.g., a high power supply voltage wire) andthe output terminal 1004, and a gate electrode of the fifth transistorM5 may be connected to the first node N1. The fifth transistor M5 maycontrol a connection between the first driving power (VGH) wire and theoutput terminal 1004 based on the voltage applied to the first node N1.The sixth transistor M6 may be connected between the output terminal1004 and a third input terminal 1003, and a gate electrode of the sixthtransistor M6 may be connected to the second node N2. The sixthtransistor M6 may control a connection between the output terminal 1004and the third input terminal 1003 based on the voltage applied to thesecond node N2. The output unit 1230 may be driven by a buffer. In someembodiments, the fifth transistor M5 and/or the sixth transistor M6 mayhave a configuration in which a plurality of transistors are connectedin parallel with each other.

The first driving unit 1210 may include a second transistor M2, a thirdtransistor M3, and a fourth transistor M4. The first driving unit 1210may control a voltage of a third node N3 based on clock signals suppliedto a first input terminal 1001, a second input terminal 1002, and athird input terminal 1003. The second transistor M2 may be connectedbetween the first input terminal 1001 and the third node N3, and a gateelectrode of the second transistor M2 may be connected to the secondinput terminal 1002. The second transistor M2 may control a connectionbetween the first input terminal 1001 and the third node N3 based on theclock signal supplied to the second input terminal 1002. The thirdtransistor M3 and the fourth transistor M4 may be connected in seriesbetween the third node N3 and the first driving power (VGH) wire. Thethird transistor M3 may be connected between the fourth transistor M4and the third node N3, and a gate electrode of the third transistor M3may be connected to the third input terminal 1003. The third transistorM3 may control a connection between the fourth transistor M4 and thethird node N3 based on the clock signal supplied to the third inputterminal 1003. The fourth transistor M4 may be connected between thethird transistor M3 and the first driving power (VGH) wire, and a gateelectrode of the fourth transistor M4 may be connected to the first nodeN1. The fourth transistor M4 may control a connection between the thirdtransistor M3 and the first driving power (VGH) wire based on thevoltage of the first node N1.

The second driving unit 1220 may include a seventh transistor M7, aneighth transistor M8, a first capacitor C1, and a second capacitor C2.The second driving unit 1220 may control the voltage of the first nodeN1 based on the second input terminal 1002 and the voltage of the thirdnode N3. The first capacitor C1 may be connected between the second nodeN2 and the output terminal 1004. The first capacitor C1 may charge avoltage based on turn-on and turn-off of the sixth transistor M6. Thesecond capacitor C2 may be connected between the first node N1 and thefirst driving power (VGH) wire. The second capacitor C2 may charge thevoltage applied to the first node N1. The seventh transistor M7 may beconnected between the first node N1 and the second input terminal 1002,and a gate electrode of the seventh transistor M7 may be connected tothe third node N3. The seventh transistor M7 may control a connectionbetween the first node N1 and the second input terminal 1002 based onthe voltage of the third node N3. The eighth transistor M8 may beconnected between the first node N1 and a second driving power (VGL)wire (e.g., a low power supply voltage wire), and a gate electrode ofthe eighth transistor M8 may be connected to the second input terminal1002. The eighth transistor M8 may control a connection between thefirst node N1 and the second driving power (VGL) wire based on the clocksignal of the second input terminal 1002. The first transistor M1 may beconnected between the third node N3 and the second node N2, and a gateelectrode of the first transistor M1 may be connected to the seconddriving power (VGL) wire. The first transistor M1 may maintain anelectrical connection between the third node N3 and the second node N2while maintaining a turn-on state. In some embodiments, the firsttransistor M1 may limit a voltage drop level of the third node N3 basedon the voltage of the second node N2. In other words, even when thevoltage of the second node N2 drops to a voltage that is lower than avoltage of a second driving power VGL, the voltage of the third node N3may not become lower than the voltage obtained by subtracting athreshold voltage of the first transistor M1 from the second drivingpower VGL.

Accordingly, the first circuit structure 800 may output the gate signal(e.g., a gate signal GW of FIG. 4 ) to the output terminal 1004.

However, although the first circuit structure 800 has been described asincluding eight transistors and two capacitors, the configuration of theembodiment described herein is not limited thereto. For example, thefirst circuit structure 800 may have a configuration including at leastone transistor and at least one capacitor.

FIG. 3 is a circuit diagram showing another example of the circuitstructure included in the display device of FIG. 1 . The circuitstructure shown in FIG. 3 may correspond to one emission signal stageincluded in the emission signal driver.

Referring to FIG. 3 , the first circuit structure 800 (or the secondcircuit structure 900) may include a first signal processing unit 2100,a second signal processing unit 2200, a third signal processing unit2300, and an output unit 2400.

The first signal processing unit 2100 may include an eleventh transistorM11, a twelfth transistor M12, and a thirteenth transistor M13. Thefirst signal processing unit 2100 may control voltages of atwenty-second node N22 and a twenty-first node N21 based on signalssupplied to a first input terminal 2001 and a second input terminal2002. The eleventh transistor M11 may be connected between the firstinput terminal 2001 and the twenty-first node N21, and a gate electrodeof the eleventh transistor M11 may be connected to the second inputterminal 2002. The eleventh transistor M11 may be turned on when a clocksignal is supplied to the second input terminal 2002. The twelfthtransistor M12 may be connected between the second input terminal 2002and the twenty-second node N22, and a gate electrode of the twelfthtransistor M12 may be connected to the twenty-first node N21. Thetwelfth transistor M12 may be turned on or turned off based on thevoltage of the twenty-first node N21. The thirteenth transistor M13 maybe connected between a second driving power (VGL) wire and thetwenty-second node N22, and a gate electrode of the thirteenthtransistor M13 may be connected to the second input terminal 2002. Thethirteenth transistor M13 may be turned on when the clock signal issupplied to the second input terminal 2002.

The second signal processing unit 2200 may include a fourteenthtransistor M14, a fifteenth transistor M15, a sixteenth transistor M16,a seventeenth transistor M17, an eleventh capacitor C11, and a twelfthcapacitor C12. The second signal processing unit 2200 may controlvoltages of the twenty-first node N21 and a twenty-third node N23 basedon a clock signal supplied to a third input terminal 2003 and thevoltage of the twenty-second node N22. The fourteenth transistor M14 maybe connected between the fifteenth transistor M15 and the twenty-firstnode N21, and a gate electrode of the fourteenth transistor M14 may beconnected to the third input terminal 2003. The fourteenth transistorM14 may be turned on when a clock signal is supplied to the third inputterminal 2003. The fifteenth transistor M15 may be connected between afirst driving power (VGH) wire and the fourteenth transistor M14, and agate electrode of the fifteenth transistor M15 may be connected to thetwenty-second node N22. The fifteenth transistor M15 may be turned on orturned off based on the voltage of the twenty-second node N22. Thesixteenth transistor M16 may be connected between a first electrode ofthe seventeenth transistor M17 and the third input terminal 2003, and agate electrode of the sixteenth transistor M16 may be connected to thetwenty-second node N22. The sixteenth transistor M16 may be turned on orturned off based on the voltage of the twenty-second node N22. Theseventeenth transistor M17 may be connected between a first electrode ofthe sixteenth transistor M16 and the twenty-third node N23, and a gateelectrode of the seventeenth transistor M17 may be connected to thethird input terminal 2003. The seventeenth transistor M17 may be turnedon when the clock signal is supplied to the third input terminal 2003.The eleventh capacitor C11 may be connected between the twenty-firstnode N21 and the third input terminal 2003. The twelfth capacitor C12may be connected between the twenty-second node N22 and the firstelectrode of the seventeenth transistor M17.

The third signal processing unit 2300 may include an eighteenthtransistor M18 and a thirteenth capacitor C13. The third signalprocessing unit 2300 may control the voltage of the twenty-third nodeN23 based on the voltage of the twenty-first node N21. The eighteenthtransistor M18 may be connected between the first driving power (VGH)wire and the twenty-third node N23, and a gate electrode of theeighteenth transistor M18 may be connected to the twenty-first node N21.The eighteenth transistor M18 may be turned on or turned off based onthe voltage of the twenty-first node N21. The thirteenth capacitor C13may be connected between the first driving power (VGH) wire and thetwenty-third node N23.

The output unit 2400 may include a nineteenth transistor M19 and atwentieth transistor M20. The output unit 2400 may control a voltagesupplied to an output terminal 2004 based on the voltages of thetwenty-first node N21 and the twenty-third node N23. The nineteenthtransistor M19 may be connected between the first driving power (VGH)wire and the output terminal 2004, and a gate electrode of thenineteenth transistor M19 may be connected to the twenty-third node N23.The nineteenth transistor M19 may be turned on or turned off based onthe voltage of the twenty-third node N23. The twentieth transistor M20may be connected between the output terminal 2004 and the second drivingpower (VGL) wire, and a gate electrode of the twentieth transistor M20may be connected to the twenty-first node N21. The twentieth transistorM20 may be turned on or turned off based on the voltage of thetwenty-first node N21. The output unit 2400 may be driven by a buffer.In some embodiments, the nineteenth transistor M19 and/or the twentiethtransistor M20 may have a configuration in which a plurality oftransistors are connected in parallel with each other.

Accordingly, the second circuit structure 900 may output the emissioncontrol signal (e.g., an emission control signal EM of FIG. 4 ) to theoutput terminal 2004.

However, although the second circuit structure 900 has been described asincluding ten transistors and three capacitors, the configuration of theembodiment described herein is not limited thereto. For example, thesecond circuit structure 900 may have a configuration including at leastone transistor and at least one capacitor.

In the embodiments, the display device 100 may have a configuration inwhich the circuit structure of FIG. 2 and the circuit structure of FIG.3 are disposed in the second sub-area 22 and the fourth sub-area 32,respectively, or a configuration in which the circuit structure of FIG.2 or the circuit structure of FIG. 3 is disposed in each of the secondsub-area 22 and the fourth sub-area 32.

FIG. 4 is a circuit diagram showing a sub-pixel and a pixel circuitincluded in the display device of FIG. 1 .

Referring to FIG. 4 , each of the first to third sub-pixels R, B, and Gincluded in the display device 100 may correspond to the organic lightemitting diode OLED, and each of the first to third pixel circuitsincluded in the display device 100 may correspond to the pixel circuitPC. When viewed in a sectional view of the display device 100, the pixelcircuit PC may be disposed on the substrate 110, and the organic lightemitting diode OLED may be disposed on the pixel circuit PC.

The pixel circuit PC may include first to seventh transistors TR1, TR2,TR3, TR4, TR5, TR6, and TR7, and a storage capacitor CST. The firsttransistor TR1 may correspond to a driving transistor, and the second toseventh transistors TR2, TR3, TR4, TR5, TR6, and TR7 may correspond toswitching transistors. Each of the first to seventh transistors TR1,TR2, TR3, TR4, TR5, TR6, and TR7 may include a first terminal, a secondterminal, a channel, and a gate terminal. In the embodiments, the firstterminal may be a source terminal, and the second terminal may be adrain terminal. In some embodiments, the first terminal may be a drainterminal, and the second terminal may be a source terminal.

The organic light emitting diode OLED may output light based on adriving current ID. The organic light emitting diode OLED may include afirst terminal and a second terminal. In the embodiments, the secondterminal of the organic light emitting diode OLED may receive a lowpower supply voltage ELVSS, and the first terminal of the organic lightemitting diode OLED may receive a high power supply voltage ELVDD. Forexample, the first terminal of the organic light emitting diode OLED maybe an anode terminal, and the second terminal of the organic lightemitting diode OLED may be a cathode terminal. In some embodiments, thefirst terminal of the organic light emitting diode OLED may be a cathodeterminal, and the second terminal of the organic light emitting diodeOLED may be an anode terminal.

The first transistor TR1 may generate the driving current ID. In theembodiments, the first transistor TR1 may operate in a saturationregion. In this case, the first transistor TR1 may generate the drivingcurrent ID based on a voltage difference between the gate terminal andthe source terminal of the first transistor TR1. In addition, graylevels may be expressed based on a magnitude of the driving current IDsupplied to the organic light emitting diode OLED. In some embodiments,the first transistor TR1 may operate in a linear region. In this case,the gray levels may be expressed based on a total time during which thedriving current is supplied to the organic light emitting diode OLEDwithin one frame.

The gate terminal of the second transistor TR2 may receive the gatesignal GW. For example, the gate signal GW may be provided from the gatestage shown in FIG. 2 , and the gate signal GW may be applied to thegate terminal of the second transistor TR2 through a gate signal (GW)wire. The first terminal of the second transistor TR2 may receive a datasignal DATA. The second terminal of the second transistor TR2 may beconnected to the first terminal of the first transistor TR1. Forexample, the gate signal GW may be provided from the gate stage shown inFIG. 2 , and the gate signal GW may be applied to the gate terminal ofthe second transistor TR2 through the gate signal (GW) wire. The secondtransistor TR2 may supply the data signal DATA to the first terminal ofthe first transistor TR1 during an activation period of the gate signalGW. In this case, the second transistor TR2 may operate in a linearregion.

The gate terminal of the third transistor TR3 may receive the gatesignal GW. For example, the gate signal GW may be provided from the gatestage shown in FIG. 2 , and the gate signal GW may be applied to thegate terminal of the third transistor TR3 through the gate signal (GW)wire. The first terminal of the third transistor TR3 may be connected tothe gate terminal of the first transistor TR1. The second terminal ofthe third transistor TR3 may be connected to the second terminal of thefirst transistor TR1. The third transistor TR3 may connect the gateterminal of the first transistor TR1 to the second terminal of the firsttransistor TR1 during the activation period of the gate signal GW. Inthis case, the third transistor TR3 may operate in a linear region. Inother words, the third transistor TR3 may diode-connect the firsttransistor TR1 during the activation period of the gate signal GW.

An input terminal of an initialization voltage wire to which aninitialization voltage VINT is provided may be connected to the firstterminal of the fourth transistor TR4 and the first terminal of theseventh transistor TR7, and an output terminal of the initializationvoltage wire may be connected to the second terminal of the fourthtransistor TR4 and a first terminal of the storage capacitor CST.

The gate terminal of the fourth transistor TR4 may receive a gateinitialization signal GI. The first terminal of the fourth transistorTR4 may receive the initialization voltage VINT. The second terminal ofthe fourth transistor TR4 may be connected to the gate terminal of thefirst transistor TR1.

The fourth transistor TR4 may supply the initialization voltage VINT tothe gate terminal of the first transistor TR1 during an activationperiod of the gate initialization signal GI. In this case, the fourthtransistor TR4 may operate in a linear region. In other words, thefourth transistor TR4 may initialize the gate terminal of the firsttransistor TR1 to the initialization voltage VINT during the activationperiod of the gate initialization signal GI. In the embodiments, theinitialization voltage VINT may have a voltage level that issufficiently lower than a voltage level of the data signal DATAmaintained by the storage capacitor CST in a previous frame, and theinitialization voltage VINT may be supplied to the gate terminal of thefirst transistor TR1. In other embodiments, the initialization voltagemay have a voltage level that is sufficiently higher than the voltagelevel of the data signal maintained by the storage capacitor in theprevious frame, and the initialization voltage may be applied to thegate terminal of the first transistor TR1.

The gate terminal of the fifth transistor TR5 may receive the emissioncontrol signal EM. For example, the emission control signal EM may beprovided from the emission signal stage shown in FIG. 3 , and theemission control signal EM may be applied to the gate terminal of thefifth transistor TR5 through an emission control signal (EM) wire. Thefirst terminal of the fifth transistor TR5 may be connected to a highpower supply voltage (ELVDD) wire. The second terminal of the fifthtransistor TR5 may be connected to the first terminal of the firsttransistor TR1. The fifth transistor TR5 may supply the high powersupply voltage ELVDD to the first terminal of the first transistor TR1during an activation period of the emission control signal EM. On thecontrary, the fifth transistor TR5 may cut off the supply of the highpower supply voltage ELVDD during an inactivation period of the emissioncontrol signal EM. In this case, the fifth transistor TR5 may operate ina linear region. Since the fifth transistor TR5 supplies the high powersupply voltage ELVDD to the first terminal of the first transistor TR1during the activation period of the emission control signal EM, thefirst transistor TR1 may generate the driving current ID. In addition,since the fifth transistor TR5 cuts off the supply of the high powersupply voltage ELVDD during the inactivation period of the emissioncontrol signal EM, the data signal DATA supplied to the first terminalof the first transistor TR1 may be supplied to the gate terminal of thefirst transistor TR1.

The gate terminal of the sixth transistor TR6 may receive the emissioncontrol signal EM. For example, the emission control signal EM may beprovided from the emission signal stage shown in FIG. 3 , and theemission control signal EM may be applied to the gate terminal of thesixth transistor TR6 through the emission control signal (EM) wire. Thefirst terminal of the sixth transistor TR6 may be connected to thesecond terminal of the first transistor TR1. The second terminal of thesixth transistor TR6 may be connected to the first terminal of theorganic light emitting diode OLED. The sixth transistor TR6 may supplythe driving current ID generated by the first transistor TR1 to theorganic light emitting diode OLED during the activation period of theemission control signal EM. In this case, the sixth transistor TR6 mayoperate in a linear region. In other words, since the sixth transistorTR6 supplies the driving current ID generated by the first transistorTR1 to the organic light emitting diode OLED during the activationperiod of the emission control signal EM, the organic light emittingdiode OLED may output light. In addition, since the sixth transistor TR6electrically separates the first transistor TR1 and the organic lightemitting diode OLED from each other during the inactivation period ofthe emission control signal EM, the data signal DATA supplied to thesecond terminal of the first transistor TR1 (to be more precise, a datasignal for which the threshold voltage is compensated) may be suppliedto the gate terminal of the first transistor TR1.

The gate terminal of the seventh transistor TR7 may receive a diodeinitialization signal GB. The first terminal of the seventh transistorTR7 may receive the initialization voltage VINT. The second terminal ofthe seventh transistor TR7 may be connected to the first terminal of theorganic light emitting diode OLED. The seventh transistor TR7 may supplythe initialization voltage VINT to the first terminal of the organiclight emitting diode OLED during an activation period of the diodeinitialization signal GB. In this case, the seventh transistor TR7 mayoperate in a linear region. In other words, the seventh transistor TR7may initialize the first terminal of the organic light emitting diodeOLED to the initialization voltage VINT during the activation period ofthe diode initialization signal GB.

The storage capacitor CST may include a first terminal and a secondterminal. The storage capacitor CST may be connected between the highpower supply voltage (ELVDD) wire and the gate terminal of the firsttransistor TR1. For example, the first terminal of the storage capacitorCST may be connected to the gate terminal of the first transistor TR1,and the second terminal of the storage capacitor CST may be connected tothe high power supply voltage (ELVDD) wire. The storage capacitor CSTmay maintain a voltage level of the gate terminal of the firsttransistor TR1 during an inactivation period of the gate signal GW. Theinactivation period of the gate signal GW may include the activationperiod of the emission control signal EM, and the driving current IDgenerated by the first transistor TR1 may be supplied to the organiclight emitting diode OLED during the activation period of the emissioncontrol signal EM. Therefore, the driving current ID generated by thefirst transistor TR1 may be supplied to the organic light emitting diodeOLED based on the voltage level maintained by the storage capacitor CST.

However, although the pixel circuit PC according to the embodimentdescribed herein has been described as including seven transistors andone storage capacitor, the configuration of the embodiment describedherein is not limited thereto. For example, the pixel circuit PC mayhave a configuration including at least one transistor and at least onestorage capacitor.

FIG. 5 is a partially enlarged plan view showing a region A of FIG. 1 ,and FIG. 6 is a partially enlarged plan view showing a region B of FIG.1 . For convenience of description, the first to third sub-pixels R, B,and G disposed in the display area 10 will be defined as a firstsub-pixel 101, a second sub-pixel 102, and a third sub-pixel 103,respectively, and the first to third sub-pixels R, B, and G disposed inthe first display area 20 and the second display area 30 will be definedas a first sub-pixel 201, a second sub-pixel 202, and a third sub-pixel203, respectively.

Referring to FIGS. 5 and 6 , the first to third sub-pixels 101, 102, and103 may be arranged over the whole substrate 110. As described above,the first to third sub-pixels 101, 102, and 103 may be arranged in aPenTile™ scheme.

The first and second sub-pixels 101 and 102 may be repeatedly arrangedin a first column 10 a of the display area 10 that is adjacent to afirst boundary between the display area 10 and the first sub-area 21(e.g., corresponding to a second direction D2 orthogonal to the firstdirection D1). For example, the first sub-pixel 101 may be disposed atan upper end in a first row and the first column 10 a of the displayarea 10, the second sub-pixel 102 may be disposed at an upper end in asecond row and the first column 10 a of the display area 10, the firstsub-pixel 101 may be disposed at an upper end in a third row and thefirst column 10 a of the display area 10, and the second sub-pixel 102may be disposed at an upper end in a fourth row and the first column 10a of the display area 10.

In addition, the third sub-pixels 103 may be repeatedly arranged in asecond column 10 b of the display area 10. For example, the thirdsub-pixel 103 may be disposed at a lower end in the first row and thesecond column 10 b of the display area 10, the third sub-pixel 103 maybe disposed at a lower end in the second row and the second column 10 bof the display area 10, the third sub-pixel 103 may be disposed at alower end in the third row and the second column 10 b of the displayarea 10, and the third sub-pixel 103 may be disposed at a lower end inthe fourth row and the second column 10 b of the display area 10. Forexample, the first column 10 a may be located between the second column10 b and the first boundary.

Similarly, the second and first sub-pixels 102 and 101 may be repeatedlyarranged in a third column 10 c of the display area 10 that is adjacentto a second boundary between the display area 10 and the third sub-area31. For example, the second sub-pixel 102 may be disposed at an upperend in the first row and the third column 10 c of the display area 10,the first sub-pixel 101 may be disposed at an upper end in the secondrow and the third column 10 c of the display area 10, the secondsub-pixel 102 may be disposed at an upper end in the third row and thethird column 10 c of the display area 10, and the first sub-pixel 101may be disposed at an upper end in the fourth row and the third column10 c of the display area 10.

In addition, the third sub-pixels 103 may be repeatedly arranged in afourth column 10 d of the display area 10. For example, the thirdsub-pixel 103 may be disposed at a lower end in the first row and thefourth column 10 d of the display area 10, the third sub-pixel 103 maybe disposed at a lower end in the second row and the fourth column 10 dof the display area 10, the third sub-pixel 103 may be disposed at alower end in the third row and the fourth column 10 d of the displayarea 10, and the third sub-pixel 103 may be disposed at a lower end inthe fourth row and the fourth column 10 d of the display area 10. Forexample, the fourth column 10 d may be located between the third column10 c and the second boundary.

In this way, the first to third sub-pixels 101, 102, and 103 may bearranged over the whole display area 10 in the PenTile™ scheme. In otherwords, the first to third sub-pixels 101, 102, and 103 may be arrangedin a zigzag shape in an order of the first sub-pixel 101, the thirdsub-pixel 103, the second sub-pixel 102, and the third sub-pixel 103 inthe first and second columns 10 a and 10 b of the display area 10. Inaddition, the first to third sub-pixels 101, 102, and 103 may bearranged in a zigzag shape in an order of the second sub-pixel 102, thethird sub-pixel 103, the first sub-pixel 101, and the third sub-pixel103 in the third and fourth columns 10 c and 10 d of the display area10.

The first to third sub-pixels 201, 202, and 203 may be arranged over thewhole of the first display area 20 and the second display area 30. Asdescribed above, the first to third sub-pixels 201, 202, and 203 may bearranged in the PenTile™ scheme.

The third sub-pixels 203 may be repeatedly arranged in a first column 20a of the first sub-area 21 that is adjacent to the first boundary. Forexample, the third sub-pixel 203 may be disposed at an upper end in asecond row (e.g., corresponding to the second row of the display area10) and the first column 20 a of the first sub-area 21, and the thirdsub-pixel 203 may be disposed at an upper end in a fourth row (e.g.,corresponding to the fourth row of the display area 10) and the firstcolumn 20 a of the first sub-area 21.

In addition, a second column 20 b of the first sub-area 21 may belocated between the first boundary and the first column 20 a of thefirst sub-area 21. A third column 20 c of the first sub-area 21 may beadjacent to the first column 20 a of the first sub-area 21, and a fourthcolumn 20 d of the first sub-area 21 may be located between the firstcolumn 20 a and the third column 20 c of the first sub-area 21.

The second and first sub-pixels 202 and 201 may be repeatedly arrangedin the third column 20 c of the first sub-area 21. For example, thesecond sub-pixel 202 may be disposed at an upper end in a first row(e.g., corresponding to the first row of the display area 10) and thethird column 20 c of the first sub-area 21, and the first sub-pixel 201may be disposed at an upper end in a third row (e.g., corresponding tothe third row of the display area 10) and the third column 20 c of thefirst sub-area 21.

In the embodiments, the first to third sub-pixels 201, 202, and 203 maynot be disposed in the second column 20 b and the fourth column 20 d ofthe first sub-area 21.

For example, sizes of the first to third sub-pixels 201, 202, and 203may be relatively greater than sizes of the first to third sub-pixels101, 102, and 103, respectively. In this case, considering a processmargin of a fine metal mask used in a process of forming a lightemitting layer included in each of the first to third sub-pixels 201,202, and 203, the first to third sub-pixels 201, 202, and 203 have to bespaced from each other by a distance that is relatively greater than adistance by which the first to third sub-pixels 101, 102, and 103 arespaced apart from each other. Accordingly, the first to third sub-pixels201, 202, and 203 are not disposed in the second column 20 b and thefourth column 20 d of the first sub-area 21, so that a defect may notoccur in the process of forming the light emitting layer of each of thefirst to third sub-pixels 201, 202, and 203. Furthermore, the first tothird sub-pixels 101, 102, and 103 may be disposed in all the columns ofthe display area 10, and the display area 10 may not include a column inwhich the first to third sub-pixels 101, 102, and 103 are not disposed.

In this way, the first to third sub-pixels 201, 202, and 203 may bearranged over the whole of the first sub-area 21 and the second sub-area22 in the PenTile™ scheme. In other words, the first to third sub-pixels201, 202, and 203 may be arranged in a zigzag shape in an order of thesecond sub-pixel 202, the third sub-pixel 203, the first sub-pixel 201,and the third sub-pixel 203 in the first to fourth columns 20 a, 20 b,20 c, and 20 d of the first sub-area 21. For reference, the secondcolumn 20 b, the first column 20 a, the fourth column 20 d, and thethird column 20 c may be sequentially arranged from the first boundaryin the first sub-area 21 in a direction from the display area 10 to thefirst display area 20.

Similarly, the first and second sub-pixels 101 and 102 may be repeatedlyarranged in a first column 30 a of the third sub-area 31 that isadjacent to the second boundary. For example, the first sub-pixel 201may be disposed at an upper end in a first row (e.g., corresponding tothe first row of the display area 10) and the first column 30 a of thethird sub-area 31, and the second sub-pixel 202 may be disposed at anupper end in a third row (e.g., corresponding to the third row of thedisplay area 10) and the first column 30 a of the third sub-area 31.

In addition, a second column 30 b of the third sub-area 31 may belocated between the second boundary and the first column 30 a of thethird sub-area 31. A third column 30 c of the third sub-area 31 may beadjacent to the first column 30 a of the third sub-area 31, and a fourthcolumn 30 d of the third sub-area 31 may be located between the firstcolumn 30 a and the third column 30 c of the third sub-area 31.

The third sub-pixels 203 may be repeatedly arranged in the third column30 c of the third sub-area 31. For example, the third sub-pixel 203 maybe disposed at an upper end in a second row (e.g., corresponding to thesecond row of the display area 10) and the third column 30 c of thethird sub-area 31, and the third sub-pixel 203 may be disposed at anupper end in a fourth row (e.g., corresponding to the fourth row of thedisplay area 10) and the third column 30 c of the third sub-area 31.

In the embodiments, the first to third sub-pixels 201, 202, and 203 maynot be disposed in the second column 30 b and the fourth column 30 d ofthe third sub-area 31.

For example, the sizes of the first to third sub-pixels 201, 202, and203 may be relatively greater than the sizes of the first to thirdsub-pixels 101, 102, and 103, respectively. In this case, consideringthe process margin of the fine metal mask used in the process of formingthe light emitting layer included in each of the first to thirdsub-pixels 201, 202, and 203, the first to third sub-pixels 201, 202,and 203 have to be spaced from each other by a distance that isrelatively greater than the distance by which the first to thirdsub-pixels 101, 102, and 103 are spaced apart from each other.Accordingly, the first to third sub-pixels 201, 202, and 203 are notdisposed in the second column 30 b and the fourth column 30 d of thethird sub-area 31, so that a defect may not occur in the process offorming the light emitting layer of each of the first to thirdsub-pixels 201, 202, and 203. Furthermore, the first to third sub-pixels101, 102, and 103 may be disposed in all the columns of the display area10, and the display area 10 may not include a column in which the firstto third sub-pixels 101, 102, and 103 are not disposed.

In this way, the first to third sub-pixels 201, 202, and 203 may bearranged over the whole of the third sub-area 31 and the fourth sub-area32 in the PenTile™ scheme. In other words, the first to third sub-pixels201, 202, and 203 may be arranged in a zigzag shape in an order of thefirst sub-pixel 201, the third sub-pixel 203, the second sub-pixel 202,and the third sub-pixel 203 in the first to fourth columns 30 a, 30 b,30 c, and 30 d of the third sub-area 31. For reference, the secondcolumn 30 b, the first column 30 a, the fourth column 30 d, and thethird column 30 c may be sequentially arranged from the second boundaryin the third sub-area 31 in a direction from the display area 10 to thesecond display area 30. In addition, the second column 10 b and thethird column 10 c of the display area 10 may be located between thefirst column 10 a and the fourth column 10 d of the display area 10, thesecond column 20 b of the first sub-area 21 may be located between thefirst column 10 a of the display area 10 and the first column 20 a ofthe first sub-area 21, and the second column 30 b of the third sub-area31 may be located between the fourth column 10 d of the display area 10and the first column 30 a of the third sub-area 31.

In the embodiments, a number of the first and second sub-pixels 101 and102 arranged in the first column 10 a of the display area 10 may beequal to a number of the third sub-pixels 103 arranged in the secondcolumn 10 b of the display area 10. In addition, a number of the thirdsub-pixels 203 arranged in the first column 20 a of the first sub-area21 may be smaller than the number of the first and second sub-pixels 101and 102 arranged in the first column 10 a of the display area 10. Forexample, the number of the third sub-pixels 203 arranged in the firstcolumn 20 a of the first sub-area 21 may be half the number of the firstand second sub-pixels 101 and 102 arranged in the first column 10 a ofthe display area 10.

As described above, the display device 100 may include the first tothird pixel circuits. In the embodiments, the first to third pixelcircuits connected to the first to third sub-pixels 101, 102, and 103disposed in the display area 10 may be disposed in the display area 10between the substrate 110 and the first to third sub-pixels 101, 102,and 103 (see FIG. 7 ).

For example, the first pixel circuit (e.g., a first pixel circuit PC11of FIG. 7 ) connected to the first sub-pixel 101 (e.g., a firstsub-pixel 101 of FIG. 7 ) disposed in the first row and the first column10 a of the display area 10 may overlap the first sub-pixel 101 in thefirst row and the first column 10 a, the second pixel circuit connectedto the second sub-pixel 102 disposed in the second row and the firstcolumn 10 a of the display area 10 may overlap the second sub-pixel 102in the second row and the first column 10 a, the first pixel circuitconnected to the first sub-pixel 101 disposed in the third row and thefirst column 10 a of the display area 10 may overlap the first sub-pixel101 in the third row and the first column 10 a, and the second pixelcircuit connected to the second sub-pixel 102 disposed in the fourth rowand the first column 10 a of the display area 10 may overlap the secondsub-pixel 102 in the fourth row and the first column 10 a. In addition,the third pixel circuit connected to the third sub-pixel 103 disposed inthe first row and the second column 10 b of the display area 10 mayoverlap the third sub-pixel 103 in the first row and the second column10 b, the third pixel circuit connected to the third sub-pixel 103disposed in the second row and the second column 10 b of the displayarea 10 may overlap the third sub-pixel 103 in the second row and thesecond column 10 b, the third pixel circuit connected to the thirdsub-pixel 103 disposed in the third row and the second column 10 b ofthe display area 10 may overlap the third sub-pixel 103 in the third rowand the second column 10 b, and the third pixel circuit connected to thethird sub-pixel 103 disposed in the fourth row and the second column 10b of the display area 10 may overlap the third sub-pixel 103 in thefourth row and the second column 10 b.

In addition, the first to third pixel circuits connected to the first tothird sub-pixels 201, 202, and 203 disposed in the first display area 20may be disposed in the first sub-area 21 between the substrate 110 andthe first to third sub-pixels 201, 202, and 203 disposed in the firstsub-area 21. In other words, the first to third pixel circuits may bedisposed only in the first sub-area 21, and the first circuit structure800 (e.g., a first circuit structure 800 shown in FIG. 9 ) may bedisposed between the substrate 110 and the first to third sub-pixels201, 202, and 203 disposed in the second sub-area 22.

For example, the third pixel circuit (e.g., a third pixel circuit PC23of FIG. 8 ) connected to the third sub-pixel 203 (e.g., a thirdsub-pixel 203 shown in FIG. 8 ) disposed in the second row and the firstcolumn 20 a of the first sub-area 21 may overlap the third sub-pixel 203in the second row and the first column 20 a. In this case, the thirdsub-pixel 203 disposed in the second row and the first column 20 a maybe connected to the third pixel circuit through a connection electrode621 and a contact hole 721. In some embodiments, the third pixel circuitmay also be disposed in the second row and the second column 20 b (i.e.,disposed in both the second row and the first column 20 a and the secondrow and the second column 20 b), or may be disposed only in the secondrow and the second column 20 b.

In addition, the third pixel circuit connected to the third sub-pixel203 disposed in the fourth row and the first column 20 a of the firstsub-area 21 may overlap the third sub-pixel 203 in the fourth row andthe first column 20 a. In this case, the third sub-pixel 203 disposed inthe fourth row and the first column 20 a may be connected to the thirdpixel circuit through a connection electrode 641 and a contact hole 741.In some embodiments, the third pixel circuit may also be disposed in thefourth row and the second column 20 b (i.e., disposed in both the fourthrow and the first column 20 a and the fourth row and the second column20 b), or may be disposed only in the fourth row and the second column20 b.

Further, the second pixel circuit connected to the second sub-pixel 202disposed in the first row and the third column 20 c of the firstsub-area 21 may overlap the second sub-pixel 202 in the first row andthe third column 20 c. In this case, the second sub-pixel 202 disposedin the first row and the third column 20 c may be connected to thesecond pixel circuit through a connection electrode 611 and a contacthole 711. In some embodiments, the second pixel circuit may also bedisposed in the first row and the fourth column 20 d (i.e., disposed inboth the first row and the third column 20 c and the first row and thefourth column 20 d), or may be disposed only in the first row and thefourth column 20 d.

Moreover, the first pixel circuit connected to the first sub-pixel 201disposed in the third row and the third column 20 c of the firstsub-area 21 may overlap the first sub-pixel 201 in the third row and thethird column 20 c. In this case, the first sub-pixel 201 disposed in thethird row and the third column 20 c may be connected to the first pixelcircuit through a connection electrode 631 and a contact hole 731. Insome embodiments, the first pixel circuit may also be disposed in thethird row and the fourth column 20 d (i.e., disposed in both the thirdrow and the third column 20 c and the third row and the fourth column 20d), or may be disposed only in the third row and the fourth column 20 d.

In this way, the first to third pixel circuits connected to the first tothird sub-pixels 201, 202, and 203 disposed in fifth to eighth columnsof the first sub-area 21 may also overlap the first to third sub-pixels201, 202, and 203 in the fifth to eighth columns, respectively. In otherwords, the first to third sub-pixels 201, 202, and 203 disposed in thefifth to eighth columns may be connected to the first to third pixelcircuits through connection electrodes 612, 622, 632, and 642 andcontact holes 712, 722, 732, and 742, respectively.

The first pixel circuit (e.g., a first pixel circuit PC21 shown in FIG.10 ) connected to the first sub-pixel 201 (e.g., a first sub-pixel 201shown in FIG. 9 ) disposed in the first row and the seventh column ofthe second sub-area 22 may be disposed in the first row and the firstcolumn 20 a of the first sub-area 21. In this case, the first sub-pixel201 disposed in the first row and the seventh column may be connected tothe first pixel circuit through a connection electrode 614 and a contacthole 714. In some embodiments, the first pixel circuit may also bedisposed in the first row and the second column 20 b of the firstsub-area 21 (i.e., disposed in both the first row and the second column20 b and the first row and the second column 20 b), or may be disposedonly in the first row and the second column 20 b.

In addition, the second sub-pixel connected to the second sub-pixel 202disposed in the first row and the third column of the second sub-area 22may be disposed in the first row and the fifth column of the firstsub-area 21. In this case, the second sub-pixel 202 disposed in thefirst row and the third column may be connected to the second pixelcircuit through a connection electrode 613 and a contact hole 713. Insome embodiments, the second sub-pixel may also be disposed in the firstrow and the sixth column of the first sub-area 21 (i.e., disposed inboth the first row and the fifth column and the first row and the sixthcolumn), or may be disposed only in the first row and the sixth column.

Further, the third pixel circuit connected to the third sub-pixel 203disposed in the second row and the fifth column of the second sub-area22 may be disposed in the second row and the third column 20 c of thefirst sub-area 21. In this case, the third sub-pixels 203 disposed inthe second row and the fifth column may be connected to the third pixelcircuit through a connection electrode 624 and a contact hole 724. Insome embodiments, the third pixel circuit may also be disposed in thesecond row and the fourth column 20 d of the first sub-area 21 (i.e.,disposed in both the second row and the third column 20 c and the secondrow and the fourth column 20 d), or may be disposed only in the secondrow and the fourth column 20 d.

Moreover, the third pixel circuit connected to the third sub-pixel 203disposed in the second row and the first column of the second sub-area22 may be disposed in the second row and the seventh column of the firstsub-area 21. In this case, the third sub-pixel 203 disposed in thesecond row and the first column may be connected to the third pixelcircuit through a connection electrode 623 and a contact hole 723. Insome embodiments, the third pixel circuit may also be disposed in thesecond row and the eighth column of the first sub-area 21 (i.e.,disposed in both the second row and the first column and the second rowand the eighth column), or may be disposed only in the second row andthe eighth column.

In this way, the first to third pixel circuits connected to the first tothird sub-pixels 201, 202, and 203 disposed in the third and fourth rowsof the second sub-area 22 may also be disposed in the first column 20 a,the third column 20 c, the fifth column, and the seventh column of thefirst sub-area 21. In other words, the first to third sub-pixels 201,202, and 203 disposed in the third and fourth rows may be connected tothe first to third pixel circuits through connection electrodes 633,634, 643, and 644 and contact holes 733, 734, 743, and 744,respectively.

Furthermore, the first to third pixel circuits connected to the first tothird sub-pixels 201, 202, and 203 disposed in the second display area30 may be disposed in the third sub-area 31 between the substrate 110and the first to third sub-pixels 201, 202, and 203 disposed in thethird sub-area 31. In other words, the first to third pixel circuits maybe disposed only in the third sub-area 31, and the second circuitstructure 900 may be disposed between the substrate 110 and the first tothird sub-pixels 201, 202, and 203 disposed in the fourth sub-area 32.

Since an arrangement of the first to third pixel circuits connected tothe first to third sub-pixels 201, 202, and 203 disposed in the seconddisplay area 30 is similar to the arrangement of the first to thirdpixel circuits connected to the first to third sub-pixels 201, 202, and203 disposed in the first display area 20, descriptions thereof will beomitted for sake of brevity. In other words, the first to thirdsub-pixels 201, 202, and 203 disposed in first to eighth columns of thethird sub-area 31 may be connected to the first to third pixel circuitsthrough connection electrodes 811, 812, 821, 822, 831, 832, 841, and 842and contact holes 911, 912, 921, 922, 931, 932, 941, and 942,respectively. In addition, the first to third sub-pixels 201, 202, and203 disposed in first to eighth columns of the fourth sub-area 32 may beconnected to the first to third pixel circuits through connectionelectrodes 813, 814, 823, 824, 833, 834, 843, and 844 and contact holes913, 914, 923, 924, 933, 934, 943, and 944, respectively.

According to the display device 100 of the embodiments described herein,the first to third sub-pixels 201, 202, and 203 are not disposed in thesecond column 20 b of the first sub-area 21 and the second column 30 bof the third sub-area 31, so that a defect may not occur in the processof forming the light emitting layer of each of the first to thirdsub-pixels 201, 202, and 203 that are adjacent to the first and secondboundaries.

However, although the display device 100 according to embodimentsdescribed herein has been described as specifically being an organiclight emitting diode display device, the configuration of theembodiments described herein is not limited thereto. In otherembodiments, the display device 100 may include a liquid crystal displaydevice (LCD), a field emission display device (FED), a plasma displaydevice (PDP), and an electrophoretic display device (EPD).

FIG. 7 is a cross-sectional view taken along line I-I′ of FIG. 5 , andFIG. 8 is a cross-sectional view taken along line II-II′ of FIG. 5 .FIG. 9 is a cross-sectional view taken along line III-III′ of FIG. 5 ,and FIG. 10 is a cross-sectional view taken along line IV-IV′ of FIG. 5.

Referring to FIGS. 5, 7, 8, 9, and 10 , the display device 100 mayinclude a substrate 110, a first pixel circuit PC11 of the display area10, a first sub-pixel 101 of the display area 10, a third pixel circuitPC23 of the first display area 20, a third sub-pixel 203 of the firstdisplay area 20, a first pixel circuit PC21 of the first display area20, a first sub-pixel 201 of the first display area 20, a first circuitstructure 800 of the second sub-area 22, a gate insulating layer 150, aninterlayer insulating layer 190, a first planarization layer 270, asecond planarization layer 275, connection electrodes 530, 614, 622, and624, a pixel defining layer 310, and the like.

In this case, the first pixel circuit PC11 may include a firsttransistor 255 a including an active layer 135 a, a gate electrode 175a, a source electrode 215 a, and a drain electrode 235 a, and a secondtransistor 250 a including an active layer 130 a, a gate electrode 170a, a source electrode 210 a, and a drain electrode 230 a, and the firstsub-pixel 101 may include a lower electrode 290 a, a light emittinglayer 330 a, and an upper electrode 340. The first pixel circuit PC11may correspond to the pixel circuit PC of FIG. 4 , and the firstsub-pixel 101 may correspond to the organic light emitting diode OLED ofFIG. 4 . For example, the first transistor 255 a may correspond to thefirst transistor TR1 of the pixel circuit PC, and the second transistor250 a may correspond to one of the second to seventh transistors TR2,TR3, TR4, TR5, TR6, and TR7 of the pixel circuit PC.

In addition, the third pixel circuit PC23 may include a third transistor255 b including an active layer 135 b, a gate electrode 175 b, a sourceelectrode 215 b, and a drain electrode 235 b, and a fourth transistor250 b including an active layer 130 b, a gate electrode 170 b, a sourceelectrode 210 b, and a drain electrode 230 b, and the third sub-pixel203 may include a lower electrode 290 b, a light emitting layer 330 b,and an upper electrode 340. The third pixel circuit PC23 may correspondto the pixel circuit PC of FIG. 4 , and the third sub-pixel 203 maycorrespond to the organic light emitting diode OLED of FIG. 4 . Forexample, the third transistor 255 b may correspond to the firsttransistor TR1 of the pixel circuit PC, and the fourth transistor 250 bmay correspond to one of the second to seventh transistors TR2, TR3,TR4, TR5, TR6, and TR7 of the pixel circuit PC.

Further, the first pixel circuit PC21 may include a fifth transistor 255c including an active layer 135 c, a gate electrode 175 c, a sourceelectrode 215 c, and a drain electrode 235 c, and a sixth transistor 250c including an active layer 130 c, a gate electrode 170 c, a sourceelectrode 210 c, and a drain electrode 230 c, and the first sub-pixel201 may include a lower electrode 290 c, a light emitting layer 330 c,and an upper electrode 340. The first pixel circuit PC21 may correspondto the pixel circuit PC of FIG. 4 , and the first sub-pixel 201 maycorrespond to the organic light emitting diode OLED of FIG. 4 . Forexample, the fifth transistor 255 c may correspond to the firsttransistor TR1 of the pixel circuit PC, and the sixth transistor 250 cmay correspond to one of the second to seventh transistors TR2, TR3,TR4, TR5, TR6, and TR7 of the pixel circuit PC.

Moreover, the first circuit structure 800 may include a first circuittransistor 855 including an active layer 735, a gate electrode 775, asource electrode 815, and a drain electrode 835, and a second circuittransistor 850 including an active layer 730, a gate electrode 770, asource electrode 810, and a drain electrode 830. The first circuitstructure 800 may correspond to the gate driver of FIG. 2 or theemission signal driver of FIG. 3 . For example, the first circuittransistor 855 or the second circuit transistor 850 may correspond toone of the first to eighth transistors M1, M2, M3, M4, M5, M6, M7, andM8 of FIG. 2 , or may correspond to one of the eleventh to twentiethtransistors M11, M12, M13, M14, M15, M16, M17, M18, M19, and M20 of FIG.3 .

Furthermore, the display device 100 may further include second and thirdpixel circuits of the display area 10, second and third sub-pixels 102and 103 of the display area 10, a second pixel circuit of the firstdisplay area 20, a second sub-pixel 202 of the first display area 20,first to third pixel circuits of the second display area 30, first tothird sub-pixels 201, 202, and 203 of the second display area 30, and asecond circuit structure 900 of the fourth sub-area 32, which are shownin FIGS. 5 and 6 .

The substrate 110 including a transparent or opaque material may beprovided. The substrate 110 may include a quartz substrate, a syntheticquartz substrate, a calcium fluoride substrate, a fluorine-doped quartzsubstrate (F-doped quartz substrate), a soda lime glass substrate, anon-alkali glass substrate, and the like.

In other embodiments, the substrate 110 may be a transparent resinsubstrate having flexibility. An example of the transparent resinsubstrate that may be used as the substrate 110 includes a polyimidesubstrate. In this case, the polyimide substrate may have a stackedstructure including a first polyimide layer, a barrier film layer, asecond polyimide layer, and the like.

Since the display device 100 includes the display area 10, the firstdisplay area 20, and the second display area 30, the substrate 110 mayalso be divided into a display area 10, a first display area 20, and asecond display area 30.

As shown in FIG. 7 , the first transistor 255 a and the secondtransistor 250 a may be disposed in the display area 10 on the substrate110. In other words, the first pixel circuit PC11 may be disposed in thedisplay area 10 between the substrate 110 and the second planarizationlayer 275 to at least partially overlap the first sub-pixel 101.

The connection electrode 530 may be disposed in the display area 10 onthe first pixel circuit PC11. The connection electrode 530 may beconnected to the drain electrode 230 a through a contact hole formed inthe first planarization layer 270.

The first sub-pixel 101 may be disposed on the first pixel circuit PC11.The first sub-pixel 101 may be electrically connected to the first pixelcircuit PC11 through the connection electrode 530. In other words, thelower electrode 290 a may be connected to the connection electrode 530through a contact hole formed in the second planarization layer 275. Inthe embodiments, the lower electrode 290 a may have a first width a1,and the contact hole formed in the first planarization layer 270 mayoverlap the lower electrode 290 a.

As shown in FIG. 8 , the third transistor 255 b and the fourthtransistor 250 b may be disposed in the first sub-area 21 on thesubstrate 110. In other words, the third pixel circuit PC23 may bedisposed in the first sub-area 21 between the substrate 110 and thesecond planarization layer 275 to at least partially overlap the thirdsub-pixel 203.

The connection electrodes 622 and 624 may be disposed in the firstsub-area 21 on the third pixel circuit PC23. The connection electrode622 may be connected to the drain electrode 230 b through the contacthole 722 formed in the first planarization layer 270. In addition, theconnection electrode 624 may extend in the first direction D1 on thefirst planarization layer 270.

The third sub-pixel 203 may be disposed on the third pixel circuit PC23.The third sub-pixel 203 may be electrically connected to the third pixelcircuit PC23 through the connection electrode 622. In other words, thelower electrode 290 b may be connected to the connection electrode 622through a contact hole formed in the second planarization layer 275. Inthe embodiments, the lower electrode 290 b may have a second width a2that is greater than the first width a1, and the contact hole 722 formedin the first planarization layer 270 may not overlap the lower electrode290 b.

As shown in FIGS. 9 and 10 , the first circuit transistor 855 and thesecond circuit transistor 850 may be disposed in the second sub-area 22on the substrate 110. In other words, the first circuit structure 800may be disposed in the second sub-area 22 between the substrate 110 andthe second planarization layer 275 to at least partially overlap thefirst sub-pixel 201.

The connection electrode 614 may be disposed in the second sub-area 22on the first circuit structure 800. The connection electrode 614 may notbe electrically connected to the first circuit structure 800.

The fifth transistor 255 c and the sixth transistor 250 c may bedisposed in the first sub-area 21 on the substrate 110. In other words,the first pixel circuit PC21 may be disposed in the first sub-area 21between the substrate 110 and the second planarization layer 275 withoutoverlapping the first sub-pixel 201 disposed in the second sub-area 22.

The connection electrode 614 may be disposed in the first sub-area 21 onthe first pixel circuit PC21. The connection electrode 614 may beconnected to the drain electrode 230 c through the contact hole 714formed in the first planarization layer 270. In other words, theconnection electrode 614 may be disposed in the second sub-area 22 andthe first sub-area 21 on the first planarization layer 270, and theconnection electrode 614 may extend in the first direction D1 and thesecond direction D2 on the first planarization layer 270.

The first sub-pixel 201 may be disposed on the first circuit structure800. The first sub-pixel 201 may be electrically connected to the firstpixel circuit PC21 disposed in the first sub-area 21 through theconnection electrode 614. In other words, the lower electrode 290 c maybe connected to the connection electrode 614 through a contact holeformed in the second planarization layer 275. In the embodiments, thelower electrode 290 c may have the second width a2, and the contact hole714 formed in the first planarization layer 270 may not overlap thelower electrode 290 c.

The active layers 130 a, 135 a, 130 b, 135 b, 130 c, 135 c, 730, and 735may be disposed on the substrate 110. Each of the active layers 130 a,135 a, 130 b, 135 b, 130 c, 135 c, 730, and 735 may include a metaloxide semiconductor, amorphous silicon, polysilicon, an organicsemiconductor, or the like.

The gate insulating layer 150 may be disposed on the active layers 130a, 135 a, 130 b, 135 b, 130 c, 135 c, 730, and 735. The gate insulatinglayer 150 may include a silicon compound, metal oxide, and the like. Forexample, the gate insulating layer 150 may include silicon oxide(SiO_(x)), silicon nitride (SiN_(x)), silicon oxynitride (SiO_(x)N_(y)),silicon oxycarbide (SiO_(x)C_(y)), silicon carbonitride (SiC_(x)N_(y)),aluminum oxide (AlO_(x)), aluminum nitride (AlN_(x)), tantalum oxide(TaO_(x)), hafnium oxide (HfO_(x)), zirconium oxide (ZrO_(x)), titaniumoxide (TiO_(x)), and the like. In some embodiments, the gate insulatinglayer 150 may have a multilayer structure including a plurality ofinsulating layers formed of mutually different materials.

The gate electrodes 170 a, 175 a, 170 b, 175 b, 170 c, 175 c, 770, and775 may be disposed on the gate insulating layer 150. Each of the gateelectrodes 170 a, 175 a, 170 b, 175 b, 170 c, 175 c, 770, and 775 mayinclude a metal, a metal alloy, metal nitride, conductive metal oxide, atransparent conductive material, and the like. For example, each of thegate electrodes 170 a, 175 a, 170 b, 175 b, 170 c, 175 c, 770, and 775may include gold (Au), silver (Ag), aluminum (Al), platinum (Pt), nickel(Ni), titanium (Ti), palladium (Pd), magnesium (Mg), calcium (Ca),lithium (Li), chromium (Cr), tantalum (Ta), tungsten (W), copper (Cu),molybdenum (Mo), scandium (Sc), neodymium (Nd), iridium (Ir), analuminum-containing alloy, aluminum nitride (AlN_(x)), asilver-containing alloy, tungsten nitride (WN_(x)), a copper-containingalloy, a molybdenum-containing alloy, titanium nitride (TiN_(x)),chromium nitride (CrN_(x)), tantalum nitride (TaN_(x)), strontiumruthenium oxide (SrRu_(x)O_(y)), zinc oxide (ZnO_(x)), indium tin oxide(ITO), tin oxide (SnO_(x)), indium oxide (InO_(x)), gallium oxide(GaO_(x)), indium zinc oxide (IZO), and the like. These may be usedalone or in combination with each other. In some embodiments, each ofthe gate electrodes 170 a, 175 a, 170 b, 175 b, 170 c, 175 c, 770, and775 may have a multilayer structure including a plurality of metallayers.

The interlayer insulating layer 190 may be disposed on the gateelectrodes 170 a, 175 a, 170 b, 175 b, 170 c, 175 c, 770, and 775. Theinterlayer insulating layer 190 may include a silicon compound, metaloxide, and the like. In some embodiments, the interlayer insulatinglayer 190 may have a multilayer structure including a plurality ofinsulating layers formed of mutually different materials.

The source electrodes 210 a, 215 a, 210 b, 215 b, 210 c, 215 c, 810, and815 and the drain electrodes 230 a, 235 a, 230 b, 235 b, 230 c, 235 c,830, and 835 may be disposed on the interlayer insulating layer 190.Each of the source electrodes 210 a, 215 a, 210 b, 215 b, 210 c, 215 c,810, and 815 and the drain electrodes 230 a, 235 a, 230 b, 235 b, 230 c,235 c, 830, and 835 may include a metal, a metal alloy, metal nitride,conductive metal oxide, a transparent conductive material, and the like.In some embodiments, each of the source electrodes 210 a, 215 a, 210 b,215 b, 210 c, 215 c, 810, and 815 and the drain electrodes 230 a, 235 a,230 b, 235 b, 230 c, 235 c, 830, and 835 may have a multilayer structureincluding a plurality of metal layers.

The first planarization layer 270 may be disposed on the sourceelectrodes 210 a, 215 a, 210 b, 215 b, 210 c, 215 c, 810, and 815 andthe drain electrodes 230 a, 235 a, 230 b, 235 b, 230 c, 235 c, 830, and835. The planarization layer 270 may include an organic insulatingmaterial. For example, the planarization layer 270 may include aphotoresist, a polyacryl-based resin, a polyimide-based resin, apolyamide-based resin, a siloxane-based resin, an acryl-based resin, anepoxy-based resin, and the like.

The second planarization layer 275 may be disposed on the firstplanarization layer 270. The second planarization layer 275 may includean organic insulating material.

The pixel defining layer 310 may be disposed on the second planarizationlayer 275. The pixel defining layer 310 may include an organicinsulating material.

FIGS. 11 and 12 are plan views showing one example of a connectionelectrode shown in FIGS. 5 and 6 .

Referring to FIGS. 11 and 12 , the connection electrode 614 may extendin the second direction D2 in the first row and the first column 20 a ofthe first sub-area 21, and the contact hole 714 may be located at anupper end of the first row and the first column 20 a. In addition, theconnection electrode 613 may extend in the second direction D2 in thefirst row and the fifth column of the first sub-area 21, and the contacthole 713 may be located at an upper end of the first row and the fifthcolumn.

The connection electrode 624 may extend in the second direction D2 inthe second row and the third column 20 c of the first sub-area 21, andthe contact hole 724 may be located at an upper end of the second rowand the third column 20 c. In addition, the connection electrode 623 mayextend in the second direction D2 in the second row and the seventhcolumn of the first sub-area 21, and the contact hole 723 may be locatedat an upper end of the second row and the seventh column.

The connection electrode 634 may extend in the second direction D2 inthe third row and the first column 20 a of the first sub-area 21, andthe contact hole 734 may be located at an upper end of the third row andthe first column 20 a. In addition, the connection electrode 633 mayextend in the second direction D2 in the third row and the fifth columnof the first sub-area 21, and the contact hole 733 may be located at anupper end of the third row and the fifth column.

The connection electrode 644 may extend in the second direction D2 inthe fourth row and the third column 20 c of the first sub-area 21, andthe contact hole 744 may be located at an upper end of the fourth rowand the third column 20 c. In addition, the connection electrode 643 mayextend in the second direction D2 in the fourth row and the seventhcolumn of the first sub-area 21, and the contact hole 743 may be locatedat an upper end of the fourth row and the seventh column.

In this way, each of the connection electrodes 813, 814, 823, 824, 833,834, 843, and 844 disposed in the first to fourth rows of the seconddisplay area 30 may extend in the second direction D2, and the contactholes 913, 914, 923, 924, 933, 934, 943, and 944 may be located at theupper ends.

FIGS. 13 and 14 are plan views showing another example of the connectionelectrode shown in FIGS. 5 and 6 .

Referring to FIGS. 13 and 14 , the connection electrode 611 may extendto the first row and the fourth column 20 d of the first sub-area 21,and may extend in the second direction D2 from the first row and thefourth column 20 d so that the contact hole 711 may be located at anupper end of the first row and the fourth column 20 d. In addition, theconnection electrode 612 may extend to the first row and the eighthcolumn of the first sub-area 21, and may extend in the second directionD2 from the first row and the eighth column so that the contact hole 712may be located at an upper end of the first row and the eighth column.

The connection electrode 621 may extend to the second row and the secondcolumn 20 b of the first sub-area 21, and may extend in the seconddirection D2 from the second row and the second column 20 b so that thecontact hole 721 may be located at an upper end of the second row andthe second column 20 b. In addition, the connection electrode 622 mayextend to the second row and the sixth column of the first sub-area 21,and may extend in the second direction D2 from the second row and thesixth column so that the contact hole 722 may be located at an upper endof the second row and the sixth column.

The connection electrode 631 may extend to the third row and the fourthcolumn 20 d of the first sub-area 21, and may extend in the seconddirection D2 from the third row and the fourth column 20 d so that thecontact hole 731 may be located at an upper end of the third row and thefourth column 20 d. In addition, the connection electrode 632 may extendto the third row and the eighth column of the first sub-area 21, and mayextend in the second direction D2 from the third row and the eighthcolumn so that the contact hole 732 may be located at an upper end ofthe third row and the eighth column.

The connection electrode 641 may extend to the fourth row and the secondcolumn 20 b of the first sub-area 21, and may extend in the seconddirection D2 from the fourth row and the second column 20 b so that thecontact hole 741 may be located at an upper end of the fourth row andthe second column 20 b. In addition, the connection electrode 642 mayextend to the fourth row and the sixth column of the first sub-area 21,and may extend in the second direction D2 from the fourth row and thesixth column so that the contact hole 742 may be located at an upper endof the fourth row and the sixth column.

In this way, each of the connection electrodes 811, 812, 821, 822, 831,832, 841, and 842 disposed in the first to fourth rows of the seconddisplay area 30 may extend in a direction opposite to the firstdirection D1 and the second direction D2, and the contact holes 911,912, 921, 922, 931, 932, 941, and 942 may be located at the upper ends.

FIGS. 15 and 16 are plan views showing one example of an arrangement ofsub-pixels included in the display device of FIG. 1 .

Referring to FIGS. 15 and 16 , the first to third sub-pixels R, B, and Gmay be arranged such that red/green-blue/green (RG-BG) sub-pixels arerepeatedly arranged in the first direction D1. For example, whencompared with one PenTile™ structure of FIGS. 5 and 6 , one PenTile™structure of FIGS. 15 and 16 may be symmetrical in the second directionD2. In other embodiments, one PenTile™ structure may be implemented as astructure that is symmetrical in the first direction D1.

FIGS. 17 and 18 are plan views showing a display device according toembodiments. A display device 1000 illustrated in FIGS. 17 and 18 mayhave a configuration that is substantially identical or similar to theconfiguration of the display device 100 described with reference toFIGS. 1 to 6 . In FIGS. 17 and 18 , redundant descriptions of componentsthat are substantially identical or similar to the components describedwith reference to FIGS. 1 to 6 will be omitted for sake of brevity. Forexample, FIG. 17 may correspond to a partially enlarged plan viewshowing the region A of FIG. 1 , and FIG. 18 may correspond to apartially enlarged plan view showing the region B of FIG. 1 .

Referring to FIGS. 17 and 18 , the display device 1000 may be configuredsuch that positions of the third sub-pixels 203 disposed in the firstdisplay area 20 and the second display area 30 are different as comparedwith the display device 100 shown in FIGS. 5 and 6 .

For example, the third sub-pixels 203 disposed in the second row and thefourth row in the first display area 20 may be relatively shifted in thedirection opposite to the first direction D1 (e.g., a direction from thesecond display area 30 to the first display area 20), and the thirdsub-pixels 203 disposed in the second row and the fourth row in thesecond display area 30 may be relatively shifted in the direction.

Since the first to third sub-pixels 101, 102, and 103 disposed in thedisplay area 10 and the first to third sub-pixels 201, 202, and 203disposed in the first and second display areas 20 and 30 are arranged inthe PenTile™ scheme, a roughness index (R-index) has to be considered.When the R-index is high, an image quality defect such as a spot and astripe may occur in the display device 1000. In particular, since agreen sub-pixel has a great influence on the R-index, an intervalbetween the third sub-pixel 103 and the third sub-pixel 203, which havea greatest influence on the R-index, has to be substantially identicalor similar at the first boundary between the display area 10 and thefirst sub-area 21 and the second boundary between the display area 10and the third sub-area 31.

In the embodiments, as shown in FIG. 17 , a first sub-pixel columnincluding the third sub-pixels 203 (e.g., the third sub-pixels 203disposed at a boundary between the first column 20 a and the fourthcolumn 20 d) may be disposed in the first sub-area 21 adjacent to thefirst boundary. As shown in FIG. 18 , a second sub-pixel columnincluding the third sub-pixels 203 (e.g., the third sub-pixels 203disposed at a boundary between the third column 30 c and the fourthcolumn 30 d) may be disposed in the third sub-area 31 adjacent to thesecond boundary. A distance g1 of the first sub-pixel column from thesecond column 10 b of the display area 10 may be substantially equal toa distance g2 of the second sub-pixel column from the fourth column 10 dof the display area 10.

In addition, a third sub-pixel column including the second and firstsub-pixels 202 and 201 (e.g., the second and first sub-pixels disposedin the third column 20 c) in the first sub-area 21 may be spaced apartfrom the first sub-pixel column in the direction from the display area10 to the first display area 20. A fourth sub-pixel column including thethird sub-pixels 203 (e.g., the third sub-pixels 203 disposed at aboundary between the fifth column and the eighth column) in the firstsub-area 21 may be spaced apart from the third sub-pixel column in thedirection. A fifth sub-pixel column including the first and secondsub-pixels 201 and 203 (e.g., the first and second sub-pixels 201 and203 disposed in the seventh column) in the first sub-area 21 may bespaced apart from the fourth sub-pixel column in the direction.

Moreover, a separation distance between the first sub-pixel column andthe third sub-pixel column in the direction may be smaller than aseparation distance between the third sub-pixel column and the fourthsub-pixel column in the direction.

Similarly, a sixth sub-pixel column including the first and secondsub-pixels 201 and 202 (e.g., the first and second sub-pixels 201 and202 disposed in the first column 30 a) in the third sub-area 31 may bedisposed between the fourth column 10 d of the display area 10 and thesecond sub-pixel column. A seventh sub-pixel column including the secondand first sub-pixels 202 and 201 (e.g., the second and first sub-pixels202 and 201 disposed in the fifth column) in the third sub-area 31 maybe spaced apart from the second sub-pixel column in a direction from thedisplay area 10 to the third sub-area 31. An eighth sub-pixel columnincluding the third sub-pixels 203 (e.g., the third sub-pixels 203disposed at a boundary between the seventh and eighth columns) in thethird sub-area 31 may be spaced apart from the seventh sub-pixel columnin the direction. A separation distance between the second sub-pixelcolumn and the sixth sub-pixel column in the direction may be smallerthan a separation distance between the second sub-pixel column and theseventh sub-pixel column in the direction.

According the display device 1000 of the embodiments described herein,the distance g1 of the first sub-pixel column from the second column 10b of the display area 10 is substantially equal to the distance g2 ofthe second sub-pixel column from the fourth column 10 d of the displayarea 10, so that a value of the R-index may be relatively reduced, andimage quality of the display device 1000 may be relatively improved.

FIGS. 19 and 20 are plan views showing a display device according toembodiments. A display device 1100 illustrated in FIGS. 19 and 20 mayhave a configuration that is substantially identical or similar to theconfiguration of the display device 100 described with reference toFIGS. 1 to 6 . In FIGS. 19 and 20 , redundant descriptions of componentsthat are substantially identical or similar to the components describedwith reference to FIGS. 1 to 6 will be omitted for sake of brevity. Forexample, FIG. 19 may correspond to a partially enlarged plan viewshowing the region A of FIG. 1 , and FIG. 20 may correspond to apartially enlarged plan view showing the region B of FIG. 1 .

Referring to FIGS. 19 and 20 , when compared with the display device 100shown in FIGS. 5 and 6 , the display device 1100 may be configured suchthat a sub-pixel arrangement of the first and second sub-pixels 101 and102 disposed in the first column 10 a of the display area 10 is appliedto the second column 30 b of the third sub-area 31. In other words,arrangements of sub-pixels in a first column (e.g., the first column 10a) and a last column (the second column 30 b) in the display area 10 maybe the same. In addition, an arrangement of the first to thirdsub-pixels 201, 202, and 203 disposed in the first display area 20 andan arrangement of the first to third sub-pixels 201, 202, and 203disposed in the second display area 30 may be symmetrical with eachother.

In this case, the second column 30 b of the third sub-area 31 may alsobe included in the display area 10, and a boundary between the secondcolumn 30 b and the first column 30 a of the third sub-area 31 may bedefined as the second boundary between the display area 10 and the thirdsub-area 31. In addition, the fourth column 10 d of the display area 10may be defined as a third column of the display area 10, and the secondcolumn 30 b of the third sub-area 31 may be defined as a fourth columnof the display area 10. Moreover, the fourth column 30 d of the thirdsub-area 31 may be defined as a first column of the third sub-area 31,and the first column 30 a of the third sub-area 31 may be defined as asecond column of the third sub-area 31.

An interval between the second column 10 b of the display area 10 inwhich the third sub-pixels 103 are disposed and the first column 20 a ofthe first sub-area 21 in which the third sub-pixels 203 are disposed maybecome equal to an interval between the fourth column 10 d of thedisplay area 10 in which the third sub-pixels 103 are disposed (i.e.,the newly defined third column of the display area 10) and the fourthcolumn 30 d of the third sub-area 31 in which the third sub-pixels 203are disposed (e.g., the newly defined first column of the third sub-area31).

In addition, the first to third sub-pixels 201, 202, and 203 may not bedisposed in the second column 20 b of the first sub-area 21 and thefirst column 30 a of the third sub-area 31 (e.g., the newly definedsecond column).

According to the display device 1100 of the embodiments as describedherein, when the arrangements of the sub-pixels in the first column andthe last column in the display area 10 are the same, and the arrangementof the sub-pixels disposed in the first display area 20 and thearrangement of the sub-pixels disposed in the second display area 30 aresymmetrical with each other, the value of the R-index may be relativelyreduced, and image quality of the display device 1100 may be relativelyimproved. In addition, a defect may not occur in the process of formingthe light emitting layer of each of the first to third sub-pixels 201,202, and 203 that are adjacent to the first and second boundaries.

FIG. 21 is a plan view showing one example of an arrangement ofsub-pixels included in the display device of FIGS. 19 and 20 .

Referring to FIG. 21 , when compared with a sub-pixel arrangementprovided in the second column 30 b of the third sub-area 31 of thedisplay device 1100 of FIGS. 19 and 20 , FIG. 21 shows a configurationin which the first sub-pixel 101 may be disposed in the first row andthe second column 30 b of the third sub-area 31, and the secondsub-pixel 102 may be disposed in the fourth row and the second column 30b of the third sub-area 31. In other words, a sub-pixel may not bedisposed in the second and third rows in the second column 30 b. Inother embodiments, a sub-pixel may be disposed only in at least one ofthe first to fourth rows in the second column 30 b.

The embodiments described herein may be applied to various electronicdevices including a display device. For example, the embodimentsdescribed herein may be applied to numerous electronic devices such asvehicle-display devices, ship-display devices, aircraft-display devices,portable communication devices, exhibition display devices, informationtransfer display devices, medical-display devices, etc.

The foregoing is illustrative of embodiments and is not to be construedas limiting thereof.

Although certain embodiments and implementations have been describedherein, other embodiments and modifications will be apparent from thisdescription. Accordingly, the inventive concepts are not limited to suchembodiments, but rather to the broader scope of the appended claims andvarious obvious modifications and equivalent arrangements as would beapparent to a person of ordinary skill in the art.

What is claimed is:
 1. A display device including a display area, afirst display area located in one side of the display area and includinga first sub-area and a second sub-area, and a second display arealocated in an opposite side of the display area and including a thirdsub-area and a fourth sub-area, the display device comprising: asubstrate; and a plurality of first sub-pixels, second sub-pixels, andthird sub-pixels disposed in the display area, the first display area,and the second display area on the substrate, wherein the plurality offirst and second sub-pixels are repeatedly arranged in a first column ofthe display area that is adjacent to a first boundary between thedisplay area and the first sub-area, and the plurality of thirdsub-pixels are arranged in a second column of the display area, theplurality of second and first sub-pixels are repeatedly arranged in athird column of the display area that is adjacent to a second boundarybetween the display area and the third sub-area, and the plurality ofthird sub-pixels are arranged in a fourth column of the display area,the plurality of third sub-pixels are arranged in a first column of thefirst sub-area that is adjacent to the first boundary, and a secondcolumn of the first sub-area is located between the first boundary andthe first column of the first sub-area, the plurality of first andsecond sub-pixels are arranged in a first column of the third sub-areathat is adjacent to the second boundary, and a second column of thethird sub-area is located between the second boundary and the firstcolumn of the third sub-area, and the plurality of first to thirdsub-pixels are not disposed in the second column of the first sub-areaand the second column of the third sub-area.
 2. The display device ofclaim 1, wherein a third column of the first sub-area is adjacent to thefirst column of the first sub-area, and a fourth column of the firstsub-area is located between the first and third columns of the firstsub-area, and the plurality of second and first sub-pixels are arrangedin the third column of the first sub-area.
 3. The display device ofclaim 2, wherein the plurality of first to third sub-pixels are notdisposed in the fourth column of the first sub-area.
 4. The displaydevice of claim 1, wherein the plurality of first to third sub-pixelsare arranged in a zigzag shape in an order of the first sub-pixel, thethird sub-pixel, the second sub-pixel, and the third sub-pixel in thefirst and second columns of the display area.
 5. The display device ofclaim 1, wherein a third column of the third sub-area is adjacent to thefirst column of the third sub-area, and a fourth column of the thirdsub-area is located between the first and third columns of the thirdsub-area, and the plurality of third sub-pixels are arranged in thethird column of the third sub-area.
 6. The display device of claim 5,wherein the plurality of first to third sub-pixels are not disposed inthe fourth column of the third sub-area.
 7. The display device of claim1, wherein the plurality of first to third sub-pixels are arranged in azigzag shape in an order of the second sub-pixel, the third sub-pixel,the first sub-pixel, and the third sub-pixel in the third and fourthcolumns of the display area.
 8. The display device of claim 1, furthercomprising: a first circuit structure disposed in the second sub-area onthe substrate.
 9. The display device of claim 8, further comprising: aplurality of first, second, and third pixel circuits connected to thefirst to third sub-pixels disposed in the display area, the firstdisplay area, and the second display area, in which the plurality offirst, second, and third pixel circuits are connected to the pluralityof first to third sub-pixels, respectively, wherein the plurality offirst to third pixel circuits connected to the plurality of first tothird sub-pixels disposed in the second sub-area, respectively, aredisposed in the first sub-area.
 10. The display device of claim 1,further comprising: a second circuit structure disposed in the fourthsub-area on the substrate.
 11. The display device of claim 10, furthercomprising: a plurality of first, second, and third pixel circuitsconnected to the plurality of first to third sub-pixels disposed in thedisplay area, the first display area, and the second display area, inwhich the plurality of first, second, and third pixel circuits areconnected to the plurality of first to third sub-pixels, respectively,wherein the plurality of first to third pixel circuits connected to theplurality of first to third sub-pixels disposed in the fourth sub-area,respectively, are disposed in the third sub-area.
 12. The display deviceof claim 1, wherein a number of the plurality of first and secondsub-pixels arranged in the first column of the display area is equal toa number of the plurality of third sub-pixels arranged in the secondcolumn of the display area, and a number of the plurality of thirdsub-pixels arranged in the first column of the first sub-area is smallerthan the number of the plurality of first and second sub-pixels arrangedin the first column of the display area.
 13. The display device of claim12, wherein the number of the plurality of third sub-pixels arranged inthe first column of the first sub-area is half the number of theplurality of first and second sub-pixels arranged in the first column ofthe display area.
 14. The display device of claim 1, wherein the firstdisplay area and the second display area are parallel to each other toface each other, the second and third columns of the display area arelocated between the first and fourth columns of the display area, thesecond column of the first sub-area is located between the first columnof the display area and the first column of the first sub-area, and thesecond column of the third sub-area is located between the fourth columnof the display area and the first column of the third sub-area, andsizes of the plurality of first to third sub-pixels disposed in thefirst and second display areas are greater than sizes of the pluralityof first to third sub-pixels disposed in the display area, respectively.15. A display device including a display area, a first display arealocated in one side of the display area and including a first sub-areaand a second sub-area, and a second display area located in an oppositeside of the display area and including a third sub-area and a fourthsub-area, the display device comprising: a substrate; and a plurality offirst sub-pixels, second sub-pixels, and third sub-pixels disposed inthe display area, the first display area, and the second display area onthe substrate, wherein the plurality of first and second sub-pixels arerepeatedly arranged in a first column of the display area that isadjacent to a first boundary between the display area and the firstsub-area, and the plurality of third sub-pixels are arranged in a secondcolumn of the display area, the plurality of second and first sub-pixelsare repeatedly arranged in a third column of the display area that isadjacent to a second boundary between the display area and the thirdsub-area, and the plurality of third sub-pixels are arranged in a fourthcolumn of the display area, a first sub-pixel column including the thirdsub-pixels is disposed in the first sub-area that is adjacent to thefirst boundary, a second sub-pixel column including the third sub-pixelsis disposed in the third sub-area that is adjacent to the secondboundary, and a distance where the first sub-pixel column is spacedapart from the second column of the display area is equal to a distancewhere the second sub-pixel column is spaced apart from the fourth columnof the display area.
 16. The display device of claim 15, furthercomprising: a third sub-pixel column spaced apart from the firstsub-pixel column in a direction from the display area to the firstdisplay area in the first sub-area, and including the plurality ofsecond and first sub-pixels; a fourth sub-pixel column spaced apart fromthe third sub-pixel column in the direction in the first sub-area, andincluding the plurality of third sub-pixels; and a fifth sub-pixelcolumn spaced apart from the fourth sub-pixel column in the direction inthe first sub-area, and including the plurality of first and secondsub-pixels.
 17. The display device of claim 16, wherein a separationdistance between the first sub-pixel column and the third sub-pixelcolumn in the direction is smaller than a separation distance betweenthe third sub-pixel column and the fourth sub-pixel column in thedirection.
 18. The display device of claim 15, further comprising: asixth sub-pixel column disposed between the fourth column of the displayarea and the second sub-pixel column in the third sub-area, andincluding the plurality of first and second sub-pixels; a seventhsub-pixel column spaced apart from the second sub-pixel column in adirection from the display area to the third sub-area in the thirdsub-area, and including the plurality of second and first sub-pixels;and an eighth sub-pixel column spaced apart from the seventh sub-pixelcolumn in the direction in the third sub-area, and including theplurality of third sub-pixels.
 19. The display device of claim 18,wherein a separation distance between the second sub-pixel column andthe sixth sub-pixel column in the direction is smaller than a separationdistance between the second sub-pixel column and the seventh sub-pixelcolumn in the direction.
 20. A display device including a display area,a first display area located in one side of the display area andincluding a first sub-area and a second sub-area, and a second displayarea located in an opposite side of the display area and including athird sub-area and a fourth sub-area, the display device comprising: asubstrate; and a plurality of first sub-pixels, second sub-pixels, andthird sub-pixels disposed in the display area, the first display area,and the second display area on the substrate, wherein the plurality offirst and second sub-pixels are repeatedly arranged in a first column ofthe display area that is adjacent to a first boundary between thedisplay area and the first sub-area, and the plurality of thirdsub-pixels are arranged in a second column of the display area, theplurality of third sub-pixels are repeatedly arranged in a third columnof the display area that is adjacent to a second boundary between thedisplay area and the third sub-area, and the plurality of first andsecond sub-pixels are repeatedly arranged in a fourth column of thedisplay area, the plurality of third sub-pixels are arranged in a firstcolumn of the first sub-area that is adjacent to the first boundary, anda second column of the first sub-area is located between the firstboundary and the first column of the first sub-area, the plurality ofthird sub-pixels are arranged in a first column of the third sub-areathat is adjacent to the second boundary, and a second column of thethird sub-area is located between the second boundary and the firstcolumn of the third sub-area, and the plurality of first to thirdsub-pixels are not disposed in the second column of the first sub-areaand the second column of the third sub-area.